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Marine mammals such as whales, dolphins and porpoises, are collectively labelled cetaceans (of the order Cetacea, comprising 87 modern species). Cetaceans appear to have evolved from a land mammal that began adapting to marine environments 50,000,000 years ago; the earliest known 'proto whale' (ancestor of modern Cetaceans) is named Pakicetus- a land-based quadruped that eventually evolved into Ambulocetus, which lived in shallow waters but were still able to walk on land.
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What has the author G D Thurman written?
G. D. Thurman has written: 'First aid for stranded marine mammals' -- subject(s): Marine mammals, First aid for animals
What football team is marine mammals?
Dolphins
Do marine mammals have eyelids?
Yes all marine mammals have eyelids.
What mammals do not live on land and do not lay eggs?
Marine mammals do not live on land, and no marine mammals lay eggs. Marine mammals include whales, dolphins and porpoises.
Are penguins marine mammals?
No, penguins are not marine mammals. They are birds that are adapted to living in aquatic environments. Marine mammals include animals like whales, dolphins, seals, and sea otters.
What do you call mammals that live in the ocean?
Marine mammals.
What is the difference among marine mammals and other mammals?
Marine mammals live and water and they need to surface to breathe. While land mammals can breathe just as humans do.
What were the first type of creatures on Earth insect mammals birds or fish?
The answer to this question is fish as fishes were the first invertbrates to evolve.
Can mammals live in the hydrosphere?
Marine mammals live in the hydrosphere.
Are dolphins marine mammals?
yes, a dolphin is a marine mammal
What are jobs that work with marine mammals?
Marine biologist, vet
Is the gray whale the biggest marine mammal?
yes gray whales are mammals. They are marine mammals.
