OceanMarine Mammals
A sperm whale's click is the loudest sound any animal makes, and it is produced by a nose.
The whale's head is mostly an oil-filled acoustic lens for focusing it.
Source
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More ocean facts
Ocean facts from a place we have mapped less thoroughly than Mars. A male anglerfish merges with his mate for good, there are lakes at the bottom of the ocean, and below about 8,400 metres there are no fish at all. Each fact links to its source.
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- Sea otters have pockets.
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- The finest candles were pressed from spermaceti, the waxy oil filling a sperm whale's head.
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