Many questions have arisen about the availability of food for the benthic comb jelly. Over much of its range it co-exists with another species of comb jelly, "Bolinopsis infundibulum". Beroe cucumis is a species of comb jelly in the family Beroidae. In 1999, the warty comb jelly colonized the Caspian Sea via the UDWS. Pleurobrachia pileus is a species of comb jelly, commonly known as a sea gooseberry. Beroe ovata is a comb jelly in the family Beroidae. "Pleurobrachia pileus" is a small, globular or ovoid comb jelly up to about in length. The benthic comb jelly is a comb jelly living in the Ryukyu Trench near Japan. The sole species in this new genus is Lampocteis cruentiventer, the bloodybelly comb jelly. The Benthic comb jelly was discovered off the coast of Japan at the Ryukyu Trench. The comb jelly has the capacity for self-fertilization, as they are hermaphroditic. "Bolinopsis infundibulum" is an oblong comb jelly growing to a maximum length of about . The Venus girdle ("Cestum veneris") is a comb jelly in the family Cestidae.