sea butterfly

== English == === Noun === sea butterfly (plural sea butterflies) Any of the suborder Thecosomata of small pelagic sea snails. Synonym: pteropod ==== Translations ==== === References === Thecosomata on Wikipedia.Wikipedia Thecosomata on Wikispecies.Wikispecies Category:Thecosomata on Wikimedia Commons.Wikimedia Commons