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Image of a purple nudibranch on a reef
© 1995-97 Nova Development Corporation
 

Image 2-15
Purple Nudibranch

Nudibranchs are mollusks that have evolved without a hard, protective shell. Many species have compensated by evolving a toxic poison. Their bight colors serve as a warning to predators that these tasty-looking snacks are not to be messed with. Most nudibranchs because they are either poisonous or contain toxins in their bodies, which makes them taste bad to predators.

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