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home / Mollusca · moliuskai
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EN · molluscs, mollusks
DE · Weichtiere
LT · moliuskai
LV · gliemji
PL · mięczaki
en.wikipedia.org/wiki/Mollusca The most universal features of the body structure of molluscs are a mantle with a significant cavity used for breathing and excretion, and the organization of the nervous system. Many have a calcareous shell. Mollusca is the second-largest phylum of invertebrate animals, after the Arthropoda. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat.