Humans are poisoned by starfish, sometimes known as sea stars. Poisonous starfish such as the sun star, the leather star, and the crown of thorns cause slight to severe poisoning in humans.
The most common poisonous starfish is the crown of thorns. It feeds on coral and lives on it. It may reach a diameter of 3 feet and have up to 21 arms. Long spines cover this starfish, which may readily pierce a wetsuit. Humans are not killed by its poison, although it produces intense redness and burning. A person who has been exposed to its poison may vomit or feel queasy in some situations. The spines can also break off and become embedded in the flesh of the victim.
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