The movement this enables - faster than any muscle contraction in the animal world - comes from an elastic tendon which they stretch taut using their back muscles.įinally, the fish use their neck bones as a ‘trigger’, like the kind you might find on a crossbow, to let them snap their heads up when needed to consume their prey. When they sense prey passing over them, they lift their heads at an incredible speed to catch it thanks to the way they can turn their body into a kind of spring. They may be one of the world’s slowest swimmers, but seahorses can spring their heads up in 0.002 seconds to snag their unsuspecting prey, a study has found.Īs ambush predators, seahorses spend much of their time anchoring themselves by their tails to coral or seaweed, keeping their heads tilted down, close to their body.
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