The hydromedusae of Podocoryna carnea are the smallest of all the species of Podocoryna that occur in Norway. The hydroid colonies can be conspicuous, and as a result they have been recorded more often than the hydromedusae. The colonies often grow on the shells of snails belonging to the family Nassariidae. Podocoryna carnea was first described by Michael Sars based on hydroid colonies collected in the fjords of western Norway.