Blowhole
hole (or spiracle) at the top of the head
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
change- ↑ "Whale evolution: The blowhole". 18 March 2008.
