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Velella velella - a small colonial hydroids representative, oceanic pelagic species. The only member of the genus. The species is distributed in subtropical and tropical latitudes of the oceans in Europe are found in the western Mediterranean Sea and on the west coast. The main findings of the type known by individuals, cast ashore on the coast of the UK and Ireland.





Inside the colonies formed flat chamber filled with air from chitin, which is covered with a mantle. It was she who maintains the entire colony on the water surface. The base of the colony is an oval fortified chitinous structures.



Floats on water. Among individuals of a given species there are about an equal number of "right-handed" and "left-handed" copies: vary in direction in which the diagonal from the front end they slanted "Sail»











Source: ru.wikipedia.org