Comment on Reef Sharks

brianorca@lemmy.world ⁨3⁩ ⁨months⁩ ago

Blacktip Reef sharks, like some others such as great white and hammerhead, are “obligate ram ventilators” because forward movement is the only way they can push water over their gills. Nurse sharks and some others are able to close their mouth and pump water to the gills while stationary.

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