Plus, corals are related to anemones and jellyfish, and the fleshy polyps have nasty stinging cells called , which resemble tiny harpoons that spear prey or potential attackers and can inject chemicals.

此外，珊瑚与海葵和水母有亲缘关系，而这种肉质息肉有令人讨厌的带刺细胞， 这种刺细胞类似于微型鱼叉， 可以用长矛捕食或攻击潜在的攻击者， 并可以注入化学物质。