Seahorse predators include crabs, rays and tuna. Storms can cause seahorses to be torn away from where they are clinging and tossed ashore. Tossed around in stormy waters, seahorses can die of exhaustion if they are unable to grab hold of something with their tail.
People threaten the seahorse's survival. Polluted water and fishing pose dangers, but also they are hunted to be used for medicine, cooking or for souvenirs.