Gill Slits Span an Extraordinary Portion of the Head for Maximum Water Flow

Water floods through this shark’s head like an open valve.

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🤯 Did You Know (click to read)

Filter-feeding sharks rely on continuous forward motion to keep water flowing across their gill structures.

Megamouth sharks possess large gill slits positioned to maximize water throughput during filter feeding. As the shark swims slowly with mouth open, water enters the cavernous gape and exits efficiently through these expansive slits.

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💥 Impact (click to read)

Thousands of liters of seawater can pass through the head of a single individual during extended feeding. The anatomy transforms the front third of its body into a continuous filtration chamber.

This hydraulic efficiency supports gigantism fueled by microscopic prey, demonstrating how structural design enables scale that appears energetically impossible.

Source

Smithsonian Ocean Portal

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