When seahorses attack
26 November 2013 Last updated at 17:24 GMT
Seahorses are famously poor swimmers, but they have a secret weapon which allows them to sneak up on their prey undetected.
Their peculiar snouts are shaped to create very few ripples in the water, effectively cloaking them as they creep up and pounce on crustaceans, a new study has found.
Video: Brad Gemmell, University of Texas at Austin