Why do sharks swim with their top fin out of the water
In: Biology
“By sticking their dorsal fins out of the water and then pulling them below the surface theses sharks can drag down air bubbles into the water that contain scent particles, which lets the shark know which direction to head when looking for prey.”
http://whalesreport.com/why-do-sharks-swim-at-surface-with-their-dorsal-fin-exposed/
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