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Marine mammals, like all other mammals, have a four-chambered heart with a complete divide. The right atrium receives deoxygenated blood from the veins and pumps it into the right ventricle. The right ventricle pumps it into the pulmonary artery, which delivers it to the lungs, where it is oxygenated. The blood then goes to the the left atrium, which pumps it into the left ventricle. The left ventricle pumps the blood into the aorta, which distributes the blood into smaller arteries all over the body.
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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 their marine birds
Why is the four chamber heart a poor choice of structure to place creatures on a phylogenic tree?
All birds and mammals have a four chambered heart.
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.
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
What two groups of marine mammals are the largest in Antarctic waters?
Whales and seals are the largest marine mammals in the Southern Ocean.
Is the gray whale the biggest marine mammal?
yes gray whales are mammals. They are marine mammals.
