Description

Also known as By-the-wind Sailor, Colonial Hydroid, Floating Hydroid Colony, Jack-by-the-wind Sailor, Little Sail, Living Sailboat, Little Sailor, Purple Sail, Sail Jellyfish, Velella.

Found on the surface of waters, with the little sail above the water to catch the wind. Often found washed up on beaches.
They feed on zooplankton.
Length - 7cm
Depth - surface of the water
Circumtropical

These hydroids feed by their tentacles that hang down in the water to catch passing plankton.
They cause an itchy rash if touched. Ref: https://en.wikipedia.org/wiki/Velella