Why do seahorses have curled tails?
Quick Answer
Seahorses use their curled tails to grip sea grass, coral, and other structures. This helps them stay anchored in moving water and save energy.
The Full Story
A seahorse’s curled tail works like a prehensile grasping tool, allowing it to hold onto plants or coral in currents. Because seahorses are weak swimmers compared with many other fish, anchoring themselves helps them avoid being swept away. Their tails also assist with camouflage, since they often remain motionless among vegetation. Seahorses are unusual among fish because they swim upright rather than horizontally, which further reflects their highly specialized body plan. These traits make them one of the most distinctive fish groups in the sea.
Key Facts
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"The only fish that uses its tail like a hand"
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