Order Platyctenea is a group of marine animals that belong to the phylum Ctenophora, also known as comb jellies. These organisms have unique translucent bodies with rows of cilia, which they use for swimming. The order Platyctenea is comprised of several species, including the sea gooseberry and the Venus's girdle. Some common synonyms for the order Platyctenea include the ciliary comb jellies and the flat comb jellies. These synonyms describe the physical characteristics of the organisms and their method of movement. Despite their beauty and unique features, some species of Platyctenea have become invasive in certain regions of the world and can threaten native ecosystems.