Species
Velella velella (By-the-wind sailor)
Velella velella. Photo: (c) Rebecca R. Helm. Image by Denis Riek., some rights reserved (CC BY-SA)
Velella is a monospecific genus of hydrozoa in the Porpitidae family. Its only known species is Velella velella, a cosmopolitan free-floating hydrozoa that lives on the surface of the open ocean. It is commonly known by the names sea raft, by-the-wind sailor, purple sail, little sail, or simply Velella.
Sightings
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