how do whales differ from fish brainly
Transient pods are known to "sneak attack" marine mammals. The polar bear is well adapted for hunting Arctic whales and calves. [138] A single specimen can reportedly fetch up to US$100,000 (64,160) on the market. Whale spindle neurons are found in areas of the brain that are homologous to where they are found in humans, suggesting that they perform a similar function. To capture their prey, chew their food, and protect themselves against threats, these marine mammals possess teeth. They also live in aquatic environments. -Fish have gills so they can breathe underwater. This adaptation allows the chest to compress during deep dives as opposed to resisting the force of water pressure. Due to these mammals warm-blooded nature, they often require large amounts of food to maintain their energy and body heat. [98] They can also be poisoned by swallowing litter, such as plastic bags. [120] Iceland, Japan and Norway have both whaling and whale watching industries. A Rices whale just under the surface of the water in the Gulf of Mexico. Flipper movement is continuous. Find Biology textbook solutions? They both reside in the frigid arctic and both have large amounts of blubber. Polar bear attacks on belugas and narwhals are usually successful in winter, but rarely inflict any damage in summer. Some species, such as sperm whales, are particularly well adapted for diving to great depths to catch squid and other favoured prey. Credit: NOAA Fisheries. To subdue and kill whales, orcas continuously ram them with their heads; this can sometimes kill bowhead whales, or severely injure them. SeaWorld And Busch Gardens Conservation Fund. Killer whales have also been reported to eat many other types of animals including leatherback sea turtles, dugongs, moose, and penguins and other seabirds. Any nation may leave as they wish; the IWC cannot enforce any law it makes. fish are classified cold blooded, egg producing, gill bearing species lakes any limb with digit and does not require breadth . [31], Whales split into two separate parvorders around 34 mya the baleen whales (Mysticetes) and the toothed whales (Odontocetes). Whales produce a great variety of vocalizations, notably the extended songs of the humpback whale. Whales do, however, lack short wavelength sensitive visual pigments in their cone cells indicating a more limited capacity for colour vision than most mammals. Because whales are warm-blooded, they need to maintain their body heat. Fishes have gills for breathing and it helps them absorbed dissolved oxygen inside water for their own use. Humpback whales only have been heard making clicks, while toothed whales use sonar that may generate up to 20,000 watts of sound (+73dBm or +43dBw)[55] and be heard for many miles. A preliminary side-by-side comparison showed that the results of this infrared camera system compared favorably to results of a team of experienced NOAA visual observers. This research provides a year-round predictive model. -Fish swim by moving their tail from side to side. About 30 killer whales attacked an 18.2 m (60 ft.) blue whale. Both have fins and a tail, which helps them swim and stay upright in the water. Some of these techniques are new and exploratory while others are tried and tested, but all are providing important data on protected whale species. Balaenids are the right whales. They will then stay there for a matter of months until the calf has developed enough blubber to survive the bitter temperatures of the poles. Whales breathe air through lungs. [88][95][105][106] As of 2015, aboriginal communities are allowed to take 280 bowhead whales off Alaska and two from the western coast of Greenland, 620 grey whales off Washington state, three common minke whales off the eastern coast of Greenland and 178 on their western coast, 10 fin whales from the west coast of Greenland, nine humpback whales from the west coast of Greenland and 20 off St. Vincent and the Grenadines each year. Whales on the other hand do not have gills but instead have one or two blowholes that connect to its lungs which allow the whale to breathe in air.Like mammals, whales and dolphins breathe air through a pair of lungs, they are warm-blooded, their young drink milk, and they have hair (although very little). When whales swim, they create propulsion by moving their tail and flukes up and down. The Vikings and various arctic tribes revered the whale as they were important pieces of their lives. Whales move their tails up and down because they evolved from mammals about 50 million years ago, said Kenneth Lacovara, a professor of paleontology and geology and the dean of the School of. However, unlike other mammals, whales, dolphins, and porpoises have flippers, flukes, a dorsal fin, and blowhole(s) that make navigating the ocean much easier. Fish have gills that extract oxygen from the water and allow it to live underwater their entire lives. Sperm whales consist the largest and smallest odontocetes, and spend a large portion of their life hunting squid. Fishes have gills for breathing and it helps them absorbed dissolved oxygen inside water for their own use. The comparatively large pod size of resident whales is an advantage when herding a school of fish. [76], These small whales are also targeted by terrestrial and pagophilic predators. [79][78] Whales defecate at the ocean's surface; their excrement is important for fisheries because it is rich in iron and nitrogen. Whales also have a thick layer of blubber to keep them insulated in the cold Arctic and the Antarctic weather; in fact, some whale species have blubber that can measure up to 10 inches thick! Whales have been depicted in various cultures worldwide, notably by the Inuit and the coastal peoples of Vietnam and Ghana, who sometimes hold whale funerals. [7], The term "Great Whales" covers those currently regulated by the International Whaling Commission:[8] the Odontoceti family Physeteridae (sperm whales); and the Mysticeti families Balaenidae (right and bowhead whales), Eschrichtiidae (grey whales), and some of the Balaenopteridae (Minke, Bryde's, Sei, Blue and Fin; not Eden's and Omura's whales).[9]. On the other hand, whales do not have gills but instead have one or two blowholes that connect to their lungs, which allow the whale to breathe in air. Killer whales are known to use their teeth for everything from biting and wounding their prey to defending themselves when hunting for sharks. Comparison of a particular animal's brain size with the expected brain size based on such allometric analysis provides an encephalisation quotient that can be used as another indication of animal intelligence. This blubber can help with buoyancy (which is helpful for a 100-ton whale), protection to some extent as predators would have a hard time getting through a thick layer of fat, and energy for fasting when migrating to the equator; the primary usage for blubber is insulation from the harsh climate. In the Northeast Region, we have a network of passive acoustic recorders and autonomous gliders recording the presence of large whales from the shore to the shelf break, using archival recorders as well as in real time with our colleagues from Woods Hole Oceanographic Institution (WHOI) and Scripps Institution of Oceanography. They have large reserves of blubber, more so for toothed whales as they are higher up the food chain than baleen whales. A beaked whale for example has a small bulge sitting on top of its skull, whereas a sperm whale's head is filled up mainly with the melon. Whales posses . The five forms of Antarctic killer whales differ in their diet: Type A whales eat mostly Antarctic minke whales and have also been observed hunting southern elephant seals. [109] The IWC is a voluntary organization, with no treaty. This also explains why whales are warm-blooded and breathe the air because their ancestors were originally designed to do so. Add your answer and earn points. They breathe through nostrils, called a blowhole, located right on top of their heads. We have been flying a small hexacopter to hover 100 to 200 feet above whales to take overhead photographs: from these we can do photogrammetry (taking measurements from photographs) to monitor growth, assess body condition, and identify pregnancies. [68] With the exception of the humpback whale, it is largely unknown when whales migrate. They are typically hunted by groups of 10 or fewer orcas, but they are seldom attacked by an individual. ncrease in the moon jelly population. Watch ourbroadcast of the 2016 Saildrone mission launchto learn more about the Saildrone program and how NOAA Fisheries scientists are utilizing the technology to study more than just whales. Biotic factors include plants, animals, and microbes; important a biotic factors include the amount of sunlight in the ecosystem . Captive whales have occasionally been known to mimic human speech. Fish, however, inhabit both fresh and salt water. vitamin A, vitamin B, vitamin C, Visual Paradigm Online (VP Online) is an online drawing software that supports Venn Diagram and a wide range of diagrams that covers UML, ERD, Organization Chart and more. [60], Brain size was previously considered a major indicator of the intelligence of an animal. Answer: Fish and whales are both vertebrates, which means they both have backbones. Niki Caro's film the Whale Rider has a Mori girl ride a whale in her journey to be a suitable heir to the chieftain-ship. They cooperatively herded small fishes into a tight ball close to the surface. To hunt a large baleen whale, a pod of killer whales may attack the whale from several angles. With streamlined fusiform bodies and two limbs that are modified into flippers, whales can travel at speeds of up to 20 knots, though they are not as flexible or agile as seals. The hippopotamus and pygmy hippopotamus are the whales' closest terrestrial living relatives.[11]. Sperm whales have the largest brain mass of any animal on Earth, averaging 8,000 cubic centimetres (490in3) and 7.8 kilograms (17lb) in mature males, in comparison to the average human brain which averages 1,450 cubic centimetres (88in3) in mature males. Odontocetes include the Monodontidae (belugas and narwhals), Physeteridae (the sperm whale), Kogiidae (the dwarf and pygmy sperm whale), and Ziphiidae (the beaked whales), as well as the six families of dolphins and porpoises which are not considered whales in the informal sense. Because their heads are enormousmaking up as much as 40% of their total body massand they have throat pleats that enable them to expand their mouths, they are able to take huge quantities of water into their mouth at a time. They are warm-blooded, and have a layer of fat, or blubber, under the skin. The former behaviour is typical when hunting non-schooling fish, slow-moving or immobile invertebrates or endothermic prey. Sunset over the ocean during a research cruise for the Northwest Fisheries Science Center. Previous Post. how are whales differ from frish - Brainly.ph (2) Toothed A blue whale is a mammal and the largest mammal on Earth. Whales are . How do whales differ from fish? - Brainly.in What are the similarities and differences of whales and fish - Brainly.ph Scientists have suggested this indicates a strong desire on behalf of the whales to communicate with humans, as whales have a very different vocal mechanism, so imitating human speech likely takes considerable effort.[56]. In many cases, whales, dolphins, and porpoises are cared for by their mothers for several months to several years and fed milk during their first year to make sure they grow up healthy and hunt and survive independently. High levels of organic chemicals accumulate in these animals since they are high in the food chain. Advertisement Advertisement New questions in English Anita works her neighbours dog to earn money She start on day 13 and then what's the dog once a day through day 19 how many times does Anita walk the dog , paki sagot po pag kasagutan mo po matalino ka, Write a complete sentence on the following situations or questions.1. This system consists of: (1) three infrared cameras that monitor a fixed swath of the gray whale migration corridor 24 hours a day, (2) automated detection software for detecting whale blows, (3) whale-blow verification software for reviewing and removing false alarms, and (4) counting software that estimates the number of whales that have passed by the observation station. There were three attempts to keep grey whales in captivity. [137] For most of the 20th century, Canada was the predominant source of wild belugas. Rather than having blubber or body fat, fish are generally thin. However, the diet of fish consists of larvae, smaller fish, squid, and plankton, among other small and microscopic organisms. They also appear to enjoy biting the vortex-rings, so that they burst into many separate bubbles and then rise quickly to the surface. Killer whales are top-level predators in the ocean. Females, referred to as "cows", carry the responsibility of childcare as males, referred to as "bulls", play no part in raising calves. This means that they are warm-blooded, have lungs, not gills, and must surface to breathe air (the 'spouting' or blows associated with whales is warm air being Fish, Marine Mammals. These animals have very large heads, which can make up as much as 40% of their body mass, and much of the head is the mouth. Some whales, such as the bowhead whale, possess a vomeronasal organ, which does mean that they can "sniff out" krill. Lay eggs. First, lets clarify the fact that whales are not fish; they are marine mammals. They primarily eat marine mammals including seals, sea lions, walruses, baleen whales, other toothed whales, and occasionally sea otters. A year later, the 8,000-kilogram (18,000lb) whale grew too big to keep in captivity and was released; it was the first of two grey whales, the other being another grey whale calf named JJ, to successfully be kept in captivity. The term whale can be used in reference to any cetacean, including porpoises and dolphins, but in general it is applied to those more than 3 metres (10 feet) long. Bears are known to use sit-and-wait tactics as well as active stalking and pursuit of prey on ice or water. To feed the newborn, whales, being aquatic, must squirt the milk into the mouth of the calf. In an Icelandic legend, a man threw a stone at a fin whale and hit the blowhole, causing the whale to burst. 2.Fish have gills that extract oxygen from the water and allow it to live underwater their entire lives. [78][80][81], Upon death, whale carcasses fall to the deep ocean and provide a substantial habitat for marine life. The flukes are attached to the end of the whale/dolphin and are used for propulsion. When you look at a fish, a shark, and a whale, you might think that they are so similar that they all must be closely related, but that's far from true. Explanation: Whales are different from fishes because they used blow holes for breathing. Some whales also use echolocation to navigate the ocean and rely heavily on sound to observe their surroundings. How do whales differ from fish? - Brainly Whale Anatomy | Characteristics and Traits | Whale Facts Answer: Whales and dolphins are mammals and breathe air into their lungs, just like we do. An encounter between a great white shark (, Two killer whales were in the area feeding on a California sea lion (. [3] Other archaic English forms include wal, wale, whal, whalle, whaille, wheal, etc. [21][22] Primitive cetaceans, or archaeocetes, first took to the sea approximately 49 million years ago and became fully aquatic 510 million years later. whales not respiration Gill but instead have one or two blowhole that connects lungs . In Vietnam and Ghana, among other places, whales hold a sense of divinity. Their eyes are well adapted to aquatic life and secrete an oil used to lubricate and protect their eyes from debris and other chemicals in the ocean. Fish have gills so they can breathe underwater. Calves are typically born in the spring and summer; females bear all the responsibility for raising them. This is an efficient method of hunting, in which the whale has no major competitors. They breathe through nostrils, called a blowhole, located right on top of their heads. In many parts of the world, killer whales prey on fishes or marine mammals, but not both. Due to the presence of lungs and the lack of gills, whales cannot extract oxygen from the water and must come to the surface for air. The behaviour of Kogiids remains largely unknown, but, due to their small lungs, they are thought to hunt in the photic zone. This information has proven critical in addressing the emerging problem of ships striking blue whales, and has informed the management of ship traffic to and from the busy ports of Los Angeles and Long Beach to mitigate this problem. [110] As of 2020[update], six are considered at risk, as they are ranked "Critically Endangered" (North Atlantic right whale[111]), "Endangered" (blue whale,[112] North Pacific right whale,[113] and sei whale[114]), and "Vulnerable" (fin whale[115] and sperm whale[116]). They feed by turning on their sides and taking in water mixed with sediment, which is then expelled through the baleen, leaving their prey trapped inside. The most basic difference between the two is that whales are warm blooded mammals, whereas fishes are marine animals. The killer whale pulled the 3 to 4 m (10 to 13 ft.) shark to the surface in its mouth and the killer whales consumed sections of the great white such as its enormous liver. See answers Advertisement TenishaTon The correct answer is Whales use blowholes for breathing Killer whales sometimes hit ice floes from below to knock penguins and pinnipeds into the water. This distinction is being questioned as these aboriginal groups are using more modern weaponry and mechanized transport to hunt with, and are selling whale products in the marketplace. Ancient whalers used harpoons to spear the bigger animals from boats out at sea. A stranding responder measures a stranded loggerhead sea turtle on a Florida beach. Naturally, some will get eaten, and others will live on long enough to reproduce and continue the family legacy. This site is using cookies under cookie policy . You can specify conditions of storing and accessing cookies in your browser, BRAINLIEST It appears to be a form of play and is most commonly seen off the coast of Argentina and South Africa. [10], Cetaceans and artiodactyls now are classified under the order Cetartiodactyla, often still referred to as Artiodactyla, which includes both whales and hippopotamuses. Office of Communications Whales swim in response to sonar and sometimes experience decompression sickness due to rapid changes in depth. An endangered North Atlantic right Whale (#3503, Caterpillar) swims close to the waters surface. [29] Other examples include the use of echolocation for hunting in low light conditions which is the same hearing adaptation used by bats and, in the rorqual whales, jaw adaptations, similar to those found in pelicans, that enable engulfment feeding. The main purpose of the dorsal fin is to stabilize the whale and keep it from rolling in the water. [138] Most captive belugas are caught in the wild, since captive-breeding programs are not very successful. For most fish species, there is no strong relationship between mother and child, especially since some fish can lay thousands of eggs over the course of a year. The Saildrone has the advantage of covering a large area, while being able to stay out for months at a time, making it much more cost-efficient than a full-scale vessel survey. Explanation: Whales are a part/member of the cetacean family, which are an aquatic group of mammals. They were kept in a tidal pool with a sea-gate at the Izu Mito Sea Paradise. Write a negative assertive sentence about the food that you do not eat.5. The success of belugas turned attention to maintaining their relative, the narwhal, in captivity. This milk contains high amounts of fat which is meant to hasten the development of blubber; it contains so much fat that it has the consistency of toothpaste. [46] Odontocetes send out high-frequency clicks from an organ known as a melon. A. Whales use blowholes for breathing. The larger parvorder, Mysticeti (baleen whales), is characterized by the presence of baleen, a sieve-like structure in the upper jaw made of keratin, which it uses to filter plankton, among others, from the water. They also have fundic and pyloric chambers. The next steps are to ensure that these technologies can be integrated into our standard monitoring protocols so their value can increase the efficiency of data collection for these species. Lastly, there are large differences in how these two animals are nurtured. Upon striking an object in the water, the sound waves bounce back at the whale. They have a pair of blowholes side by side and lack teeth; instead they have baleen plates which form a sieve-like structure in the upper jaw made of keratin, which they use to filter plankton from the water. Besides the threat from whalers, they also face threats from bycatch and marine pollution. The two parvorders of whales, baleen whales (Mysticeti) and toothed whales (Odontoceti), are thought to have had their last common ancestor around 34 million years ago. [26][27][28], Whale morphology shows several examples of convergent evolution, the most obvious being the streamlined fish-like body shape. Credit: Florida Fish and Wildlife Conservation Commission (NOAA permit #20556-01). Their closest non-cetacean living relatives are the hippopotamuses, from which they and other cetaceans diverged about 54 million years ago. It contains at least three of the The whale is an albino sperm whale, considered by Melville to be the largest type of whale, and is partly based on the historically attested bull whale Mocha Dick. It was thought that Sowerby's beaked whale evolved to swim fast in a straight line, and a 30-metre (98ft) tank was not big enough. They use a suction technique, aided by a pair of grooves on the underside of their head, not unlike the throat pleats on the rorquals, to feed.[20]. Yet, individual ecotypes or populations are often extremely specialized. These vary from size, to coloration, to distribution, but they all share a similar hunting style. Spout shapes differ among species, which facilitates identification. Whales are a widely distributed and diverse group of fully aquatic placental marine mammals. Whales range in size from the 2.6-metre (8.5ft) and 135-kilogram (298lb) dwarf sperm whale to the 34-metre (112ft) and 190-metric-ton (210-short-ton) blue whale. They cannot breathe underwater like fish can as they do not have gills. Whales are mammals, whereas fishes are aquatic animals. [65], Larger whales are also thought, to some degree, to engage in play. Mysticetes have two blowholes, whereas Odontocetes contain only one. Whale watching has become a form of tourism around the world. They cannot breathe underwater like fish can as they do not have gills. Marine Ecosystems - National Geographic Society [69], Unlike most animals, whales are conscious breathers. in South Korea, had a very high dependency on whales. ", "CWA travels to The Petroglyphs of Bangudae", "Bizarre whale treatment for rheumatism revealed", "Whales flee from military sonar leading to mass strandings, research shows", "How the sperm whale can hold its breath for 90 minutes", "Whales Descended From Tiny Deer-like Ancestors", "Thousand gather for whale's funeral in Vietnam", "Whale funeral draws 1000 mourners in Vietnam", https://en.wikipedia.org/w/index.php?title=Whale&oldid=1149448394, This page was last edited on 12 April 2023, at 09:13. [38][39], All whales have a thick layer of blubber. Twenty-one species have a "Data Deficient" ranking. How do whales differ from fish? Finally, sulfophilic bacteria reduce the bones releasing hydrogen sulfide enabling the growth of chemoautotrophic organisms, which in turn, support other organisms such as mussels, clams, limpets, and sea snails. Other times they corral the narwhals or belugas before striking. Whales stay together in their pods for most of their life. blowhole, gill. These distinct differences between whales and fish have led to very different classifications for these two types of animals. Rudyard Kipling's Just So Stories includes the story of "How the Whale got in his Throat". When swimming, whales rely on their tail fin to propel them through the water. . Whales swim by moving their tail fin and lower body up and down, propelling themselves through vertical movement, while their flippers are mainly used for steering. Eschrichtiids have one living member: the grey whale. Several whale species exhibit sexual dimorphism, in that the females are larger than males. [133] It was believed that climbing inside a whale carcass and remaining there for a few hours would relieve symptoms of rheumatism.[134]. Another strong distinction between fish and marine mammals involves breathing and how the respiratory system works between the two animal species. This melon consists of fat, and the skull of any such creature containing a melon will have a large depression. Fish, on the other hand, have vertical tails, which move from side to side. A recording of Song with a Humpback Whale by a team of marine scientists became popular in 1970. Narwhals, being black, hunt in large pods in the aphotic zone, but their underbelly still remains white to remain camouflaged when something is looking directly up or down at them. Whales have also played a role in sacred texts. These thermal signatures are depicted in white so they stand out from the colder, surrounding waters (depicted in black). Understanding species habitat allows us to address conservation problems that are often unexpected and critical to maintaining healthy populations.. of herring, smelt, and squid per day. Marine ecosystems are defined by their unique biotic (living) and abiotic (nonliving) factors. Although rarely seen, killer whales in Hawaiian waters seem to have a more varied diet including humpback whales, dolphins, octopuses and squids. Among the species he described were dolphins, orcas, and baleen whales, noting that "the [whale] has no teeth but does have hair that resemble hog bristle" ( HA 519b9-15). The Southern Ocean whale sanctuary spans 30,560,860 square kilometres (11,799,610sqmi) and envelopes Antarctica. Prey such as these sea lions, may not be safe from killer whales even on land. [77], A 2010 study considered whales to be a positive influence to the productivity of ocean fisheries, in what has been termed a "whale pump." [32][33][34], Whales have torpedo-shaped bodies with non-flexible necks, limbs modified into flippers, non-existent external ear flaps, a large tail fin, and flat heads (with the exception of monodontids and ziphiids). Since they are unable to go onto land to calve, they deliver the baby with the fetus positioned for tail-first delivery. Ziphiids consist of 22 species of beaked whale. Around New Zealand a group of seven killer whales were observed hunting a shortfin mako shark (. Transient whales spend about 90% of daylight hours foraging. Fish use gills to extract air from water. The examples given here clearly prove that these two animals are not the same. To obtain enough food to power their large bodies, a whales dietoften consists offish,krill,squid,crustaceans,and other small aquatic life forms that give it the energy it needs to thrive and survive in the ocean. Scientists talk about the evidence that supports their concern that our planet is warming. Whales are normally bigger than fish and live in salt water. In fact, after birth, many fish species are left to fend for their own and must rely on the sack thats attached to them at birth for the nutrients they need until they can hunt and survive on their own. What Differences Are Their Between Whales and Fish? Salmon make up 96% of their diet; Chinook salmon (. Whales occasionally feature in literature and film. [35][36], Odontocetes, such as the sperm whale, possess teeth with cementum cells overlying dentine cells. [89] By the early 1790s, whalers, namely the Americans and Australians, focused efforts in the South Pacific where they mainly hunted sperm whales and right whales, with catches of up to 39,000 right whales by Americans alone. Whales are descendants of land-dwelling mammals of the artiodactyl order (even-toed ungulates). How do whales differ from fish? Baleen whales also have a well-developed sense of smell. and by the Antarctic type A and large type B ecotypes in the southern hemisphere. Whistles are narrow-band frequency modulated (FM) signals, used for communicative purposes, such as contact calls. Breathing is an important process in cellular respiration as it brings oxygen into the cell. They aren't known for nurturing their young. About | Privacy Policy | Disclosure Policy | Copyright 2023, Books About Whales, Dolphins and Various Marine Animals, Whale Watching Information, History and Facts, Extract oxygen from the water using gills, They arent known for nurturing their young. Whales lessen the chance of predation by gathering in groups. "Structure of the cerebral cortex of the humpback whale, "The whale road: Transitioning from spiritual links, to whaling, to whale watching in Aotearoa New Zealand", "Quantifying the sensitivity of Arctic marine mammals to climate-induced habitat change", "An acoustical hypothesis for the spiral bubble nets of humpback whales, and the implications for whale feeding", "Adaptive features of aquatic mammals' eyes", "Stereotypical resting behavior of the sperm whale", "Sound transmission in archaic and modern whales: Anatomical adaptations for underwater hearing", "Anatomical adaptations of aquatic mammals", "The Whale Pump: Marine Mammals Enhance Primary Productivity in a Coastal Basin", "Elements of beaked whale anatomy and diving physiology and some hypothetical causes of sonar-related stranding", "Ecology of Whale Falls at the Deep-Sea Floor", "Predation of Belugas and Narwhals by Polar Bears in Nearshore Areas of the Canadian High Arctic", "Radiation of Extant Cetaceans Driven by Restructuring of the Oceans", 10.2305/IUCN.UK.2008.RLTS.T41755A160983555.en, "Whales originated from aquatic artiodactyls in the Eocene epoch of India", "Satellite-monitored movements of humpback whales, "Whale poo important for ocean ecosystems", "John Newton's 'A Savage History: Whaling in the South Pacific and Southern Oceans', "Beluga Bubbles Reveal How These Whales Are Feeling", "And God Created Great Whales (1970) for Orchestra and Whale Songs", "Narwhal and White Whale (Family Monodontidae)", "The Convergent Evolution of Marine Fish and Whales", "Persistent organic pollutants in the marine food chain", "Jaw-Dropping Similarity Found in Whales and Pelicans", Whale Watching Worldwide: tourism numbers, expenditures and expanding economic benefits, "The Sea Will Get a Lot Quieter Without the Navy's Whale-Killing Sonar", "Introduction to Cetacea: Archaeocetes: The Oldest Whales", "The physics of bubble rings and other diver's exhausts", "Timeline: The History of Whaling in America", "Does Military Sonar Kill Marine Wildlife?
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