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Sponge-harp
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Although the sea sponge is not similar to that what is in your bathroom, it still refers to the "multi-cellular water, mostly offshore, modular invertebrates", ie sponges. Carnivorous Chondrocladia lyra, also known as sponge-harp, uses its long, narrow "string" for hunting and breeding. Each of its tentacles ends hollow ball, which is in the mating season is filled with spermatophores.
via factroom.ru