When a small fish or shrimp brushes against the tentacle, the stinging cell explodes and delivers the toxin. Then the anemone eats the paralyzed prey. At night, the anemones use their stingers to zap prey. By day, they fan out their other tentacles to let their plant partners catch some sunlight. In return, the algae make and release carbohydrates that nourish the anemones.
Many anemones clone themselves and form clusters of genetically identical individuals.
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