Blowhole
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A blowhole is the hole that cetaceans use to breathe. It is homologous to the nostrils of other mammals.[1]
When whales come up to the surface of the water, they release air through the blowhole. Water vapor in the air condenses. This makes a spray of water.
References
- ↑ Whale evolution: The blowhole (18 March 2008).