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
母有亲缘关系,而这种肉质息肉有令人讨厌的带刺细
, 这种刺细
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。