Yes, they are all aquatic mammals.
Whales dolphins seals sea lions manatees walruses dugongs and more
seals, sea lions, walruses . :D
whale, dolphin, otter, sea lion, walrus, seals, iguanas, crocodiles or caymen, sea snakes but of these, only whales, dolphins and porpoises continuously live in the ocean. The others primarily live on land.
Seals, whales, dolphins,walruses, and playpi! They are all mammals.
carnivorous aquatic mammals that include the seals, walruses, and similar animals having finlike flippers as organs of locomotion.
Any sea mammal will produce milk, i.e. seals, sea lions, walruses, dolphins, porpoises, whales, and manatees.
They are called marine mammals, more specifically cetaceans (whales, dolphins) rather than manatees or dugongs, or semi-aquatic mammals such as seals, sea lions, and otters.
Both are mammals. That's it, they are not related. The walrus is a pinniped, related to seals, whales are Cetaceans, related to porpoises and dolphins.
There are three orders of marine mammals; cetacea, sirenia and carnivore. The cetacea order includes whales and dolphins while the sirenia order is mostly sea cows. The carnivore order has bears, sea lions and otters.
There are four main groups of marine mammals. They are cetaceans which include whales and dolphins, pinnipeds which includes seals and sea lions, sirenians which are manatees and dugongs, and fissipeds which are polar bears and two species of otters.
Dolphins, Porpoises, Whales, Dugongs, Manatees, Hippos, Otters, Seals, Walruses are mammals that are very good at swimming. Most mammals can swim to some degree but there are some that like to swim and others that don't like to swim - like domestic cats. Domestic cats can swim, but they are very unhappy about it. Tigers, that are another cat, love being in water and swim well. Did you know that elephants can swim? They can cross lakes, rivers and sea inlets.
Walruses are mammals therefore they are warm blooded.