The Blue whale (Balaenoptera musculus) is a marine mammal and a baleen whale. It is the largest animal known to have ever existed. The Blue whale was once abundant in nearly all the Earth's oceans until the end of the 19th century. It was hunted...
The Killer whale (Orcinus orca) is a toothed whale belonging to the oceanic dolphin family. It is the largest member of this family. The sophisticated hunting techniques and vocal behaviors of Killer whales have been described as manifestations of...
The Polar bear (Ursus maritimus) is a hypercarnivorous bear found within the Arctic Circle, encompassing the Arctic Ocean, its surrounding seas and surrounding land masses. It is the largest extant bear species, as well as the largest extant land...
The narwhal, also known as a narwhale (Monodon monoceros), is a medium-sized toothed whale with a large "tusk" from a protruding canine tooth. It is one of two living species of whale in the family Monodontidae, along with the Beluga whale. Narwhals...
The Sperm whale or cachalot (Physeter macrocephalus) is the largest of the toothed whales and the largest toothed predator. It is the only living member of the genus Physeter and one of three extant species in the sperm whale family, along with the...
The Beluga whale (Delphinapterus leucas) is a cetacean adapted to life in the Arctic, with anatomical and physiological characteristics that differentiate it from other cetaceans. Amongst these are its all-white color and the absence of a dorsal...
The giant squid (Architeuthis dux ) is a species of deep-ocean dwelling squid in the family Architeuthidae. It can grow to a tremendous size, offering an example of deep-sea gigantism: recent estimates put the maximum size at around 12–13 m...
The walrus (Odobenus rosmarus) is a large flippered marine mammal with a discontinuous distribution about the North Pole in the Arctic Ocean and subarctic seas of the Northern Hemisphere. The walrus is the only living species in the family...
The Humpback whale (Megaptera novaeangliae) is a species of baleen whale. It is a rorqual; a member of the family Balaenopteridae. The Humpback whale is known for breaching and other distinctive surface behaviors, making it popular with whale...
The Emperor penguin (Aptenodytes forsteri) is the tallest and heaviest of all living penguin species and is endemic to Antarctica. Like all penguins, it is flightless, with a streamlined body, and wings stiffened and flattened into flippers for a...
The colossal squid (Mesonychoteuthis hamiltoni ) is part of the family Cranchiidae. It is sometimes called the Antarctic squid or giant cranch squid and is believed to be the largest squid species in terms of mass. It is the only recognized member...
The leatherback sea turtle (Dermochelys coriacea ), sometimes called the lute turtle or leathery turtle or simply the luth, is the largest of all living turtles and the heaviest non-crocodilian reptile, reaching lengths of up to 1.8 metres and...
The Sea otter (Enhydra lutris) is a marine mammal native to the coasts of the northern and eastern North Pacific Ocean. They are the heaviest members of the weasel family, but among the smallest marine mammals. Unlike most marine mammals, the sea...
The Green sea turtle (Chelonia mydas) is a species of large sea turtle of the family Cheloniidae. The common name of this species refers to the usually green fat found beneath its carapace, not to the color of its carapace, which is olive to black....
The loggerhead sea turtle (Caretta caretta ), is a species of oceanic turtle distributed throughout the world. It is a marine reptile, belonging to the family Cheloniidae. The average loggerhead measures around 90 cm (35 in) in carapace length when...
The Blue-footed booby (Sula nebouxii) is a marine bird native to subtropical and tropical regions of the eastern Pacific Ocean. It is one of six species of the genus Sula - known as boobies. It is easily recognizable by its distinctive bright blue...
The Leopard seal (Hydrurga leptonyx) is the second largest species of seal in the Antarctic (after the Southern elephant seal). Its only natural predator is the orca. It is the only species in the genus Hydrurga. Its closest relatives are the Ross...
The False killer whale (Pseudorca crassidens) is a species of oceanic dolphin that is the only extant representative of the genus Pseudorca. It is found in oceans worldwide but mainly frequents tropical regions. The name "false killer whale" comes...
The Bowhead whale (Balaena mysticetus) is a species of baleen whale and the only living representative of the genus Balaena. They are the only baleen whale endemic to the Arctic and subarctic waters and are named after their characteristic massive...
The common octopus (Octopus vulgaris ) is a mollusc belonging to the class Cephalopoda. Octopus vulgaris is one of the most studied of all octopus species, and also one of the most intelligent. It is cosmopolitan, that is, a global species, which...
Described as "The bird which made the breeze to blow" the wingspan of a Wandering albatross (Diomedea exulans) is the longest of any bird. It lives up to its name when it takes fishing trips that last 10-20 days and can cover 10,000 km while using...
The Fin whale (Balaenoptera physalus) is a cetacean belonging to the parvorder of baleen whales. It is the second-longest species of cetacean on Earth after the Blue whale. American naturalist Roy Chapman Andrews called the fin whale "the greyhound...
The Atlantic puffin (Fratercula arctica) is a colorful seabird that belongs to the auk family. It is the only puffin native to the Atlantic Ocean. Although it has a large population and a wide range, the species has declined rapidly, at least in...
The Little blue penguin (Eudyptula minor) is a species of penguin that is found in New Zealand. They are also commonly known as Blue penguins owing to their slate-blue plumage. They are also known by their Māori name kororā.
The Adélie penguin (Pygoscelis adeliae) is a species of penguin common along the entire coast of the Antarctic continent. This is the only place where it is found. It is the most widespread penguin species, and, along with the Emperor penguin, is...
The Gray whale (Eschrichtius robustus) is a baleen whale that migrates between feeding and breeding grounds yearly. The common name of this whale comes from the gray patches and white mottling on its dark skin. Gray whales were once called devil...
The vampire squid (Vampyroteuthis infernalis, lit. 'vampire squid from hell') is a small cephalopod found throughout temperate and tropical oceans in extreme deep sea conditions. The vampire squid uses its bioluminescent organs and its unique oxygen...
The African penguin (Spheniscus demersus) is a species of penguin that lives in southern African waters. Like all extant penguins, it is flightless and adapted for a marine habitat. Once extremely numerous, the African penguin is declining rapidly...
The Hawksbill sea turtle (Eretmochelys imbricata) is a critically endangered sea turtle belonging to the family Cheloniidae. It is the only extant species in the genus Eretmochelys. The Hawksbill sea turtle has a global distribution; it lives part...
The King penguin (Aptenodytes patagonicus) is the second largest species of penguin. This species was exploited commercially in the past for its blubber, oil, meat, and feathers but today, it is fully protected.
The Harbor seal (Phoca vitulina) is a true seal that lives along temperate and Arctic marine coastlines of the Northern Hemisphere. It is the most widely distributed species of pinniped (walruses, eared seals, and true seals). Harbor seals like to...
The Humboldt squid (Dosidicus gigas ), also known as jumbo squid or jumbo flying squid (EN), and Pota in Peru or Jibia in Chile (ES) is a large, predatory squid living in the eastern Pacific Ocean. It is the only known species of the genus Dosidicus...
The olive ridley sea turtle (Lepidochelys olivacea ), also known commonly as the Pacific ridley sea turtle, is a species of turtle in the family Cheloniidae. The species is the second-smallest and most abundant of all sea turtles found in the world....
The West Indian manatee (Trichechus manatus) is the largest member of the aquatic mammal order Sirenia (which also includes the dugong and the extinct Steller's sea cow). Manatees are obligate herbivores, have developed vocal communication...
The Gentoo penguin (Pygoscelis papua) is a penguin species (or possibly a species complex) in the genus Pygoscelis. It is most closely related to the Adélie penguin and the Chinstrap penguin. Gentoo penguins are the fastest underwater swimmers of...
The Harp Seal (Pagophilus groenlandicus) is a species of earless seal, or true seal, native to the northernmost Atlantic Ocean and Arctic Ocean. In Greek, its scientific name translates to "ice-lover from Greenland," and its taxonomic synonym, Phoca...
The Macaroni penguin (Eudyptes chrysolophus) is a species of penguin found from the Subantarctic to the Antarctic Peninsula. It is very closely related to the Royal penguin, and some authorities consider the two to be a single species. Numbering up...
The California sea lion (Zalophus californianus) is one of six species of sea lions. They mainly haul-out on sandy or rocky beaches, but they also frequent manmade environments such as marinas and wharves. California sea lions are particularly...
The Irrawaddy dolphin (Orcaella brevirostris) is a euryhaline species of oceanic dolphin found in scattered subpopulations near sea coasts of the Bay of Bengal and Southeast Asia. It closely resembles the Australian snubfin dolphin and was not...
The Cuvier's beaked whale (Ziphius cavirostris) is the most widely distributed of all beaked whales in the family Ziphiidae. It is smaller than most baleen whales yet large among beaked whales. Cuvier's beaked whale is pelagic and occurs in waters...
Clione limacina, known as the naked sea butterfly, sea angel, and common clione, is a sea angel (pelagic sea slug) found from the surface to greater than 500 m (1,600 ft) depth. It lives in the Arctic Ocean and cold regions of the North Atlantic...
The Brown pelican (Pelecanus occidentalis) has been described as a comically elegant bird. Groups of these seabirds glide above surf along western and southern coasts, gracefully echoing the waves with their rise and fall. They plunge-dive from high...
