Sperm whale and diver
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It's also a huge sound generator that helps navigate the whale. The massive bulbous head of the whale is about one-third of the animal's length. This male sperm whale 'Physeter macrocephalus' is the largest living toothed predator on earth. It can float up to at least 6,500 feet to feed. Its submarine-like shape is fully customized for deep diving.
[Source](https://www.livescience.com/28054-whales-giants-of-the-deep.html)
0.000 SRY