Blubber
Thick layer of animal body fat
Blubber
Blubber is a thick layer of vascularized adipose tissue under the skin of all cetaceans, pinnipeds, penguins, sirenians, and polar bears. It was present in many marine reptiles, such as ichthyosaurs and plesiosaurs.
Read on Wikipedia · Image Susanna Haas, CC BY-SA 2.0
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