Rosacea (cnidarian)

The Rosacea genus is a genus of hydrozoancnidarians in the order Siphonophorae and the family Prayidae. They have been observed in the Atlantic and Pacific Oceans, the Mediterranean Sea, the Sargasso Sea, and the Gulf of Oman, with some species having worldwide distribution excluding polar waters. The Rosacea genus is a pelagic, deep-sea, holoplanktonic genus residing in the water column. The genus contains bioluminescent species.