The once distinct neck vertebrae of cetaceans have fused, giving them a sleek, torpedo-shaped body that moves effortlessly through the water. Without this air layer, the otter would quickly succumb to hypothermia even in relatively mild waters.
How Marine Mammals Use Blubber for Warmth in Deep Waters
They evolved from bear-like ancestors and retain the ability to move on land, albeit clumsily. Mastering the Art of Thermoregulation Water conducts heat away from the body much faster than air, creating a significant survival challenge for warm-blooded animals.
Elephant seals and sperm whales can dive for over an hour, descending to depths where the pressure would crush a human lung instantly. They also tolerate high levels of lactic acid and carbon dioxide, effectively turning their bodies into efficient, temporary anaerobic machines.
How Marine Mammals Use Blubber for Warmth in Deep Waters
To survive these feats, they possess a remarkable physiological toolkit. Sirenians and Others: This category includes manatees and dugongs, which are closely related to elephants, as well as the marine otter and the polar bear, which are more recently adapted to marine life.
More About Mammals in water
Looking at Mammals in water from another angle can help expand the discussion and give readers a second clear paragraph under the same section.
More perspective on Mammals in water can make the topic easier to follow by connecting earlier points with a few simple takeaways.
