Little is known about the behaviour of bobbit worms. It's theorized that the worm doesn’t see at all but uses its excellent receptors to detect movement in the water to sense nearby fish.

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Bobbit Worm

When anemonefish leaves it host for a long time, they need to re-adapt to the host stinging cells. To do so, the fish goes through a dance-like ritual taking several hours. Clownfish rarely move more than 30 cm from their host anemone, though.

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Clown Anemonefish

The balloonfish can inflate its body three times the normal size to make attacks more difficult for predators.