How seahorses use their heads

The odd shape of a dwarf seahorse’s head lets it sneak up and snack on unsuspecting prey

By Stephen Ornes, 12:10 PM December 17, 2013

Dwarf seahorses swim slowly. That doesn’t seem to hurt their ability to catch prey, however. What they lack in speed they make up for in stealth. Their jaws approach their prey, undetected, until they’re closer than the thickness of a penny. Then the fish strike before their snack can escape. Scientists recently reported they’ve found the secret to this seahorse’s sneak attack: the unusual shape of its head.

Seahorses often eat copepods, tiny shrimplike crustaceans that share the same watery n...

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