Deep-diving sperm whale
Jan 21, 2021
2 minutes
© Science Photo Library
Sperm whales are rather odd-looking creatures. They have the biggest head and brain in the animal kingdom, which looks out of proportion to the rest of the body, and is much more noticeable in males. They also have a narrow, long lower jaw. Sperm whales are mammals that, just like us, need to breathe
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