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Nudibranchia spore ribbon
Nudibranchs are hermaphroditic, and thus have a set of reproductive organs for both sexes, but they cannot fertilize themselves. Nudibranchs typically deposit their eggs within a gelatinous spiral
They are found throughout the world's oceans, but are most abundant in shallow, tropical waters.
Nudibranchs are simultaneous hermaphrodites, and can mate with any other mature member of their species. Their lifespan varies widely, with some living less than a month, and others living up to one year.