What adaptations do annelids have to withstand adverse conditions?

Ringworms (annelids) are a type of worms of the highest organization, including a large number of species. There are five classes of this type of worms: small-bristle, polychaete, dinophilids, misostomids, and girdle. All types have many adaptations to the adverse conditions in which they can find themselves. One of the adaptations is the protective mucus that covers the body of the worms. In such a representative as a leech, suspended animation is common (usually in winter). Polychaetae have a protective coloration, and during periods of hibernation they crawl to a depth.

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