Trachymedusae

4 species

Trachymedusae belong to the phylum Cnidaria and the class Hydrozoa, among the 30 genera are 5 families containing around 50 species in all, the family Rhopalonematidae has the greatest diversity.

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Trachymedusae belong to the phylum Cnidaria and the class Hydrozoa, among the 30 genera are 5 families containing around 50 species in all, the family Rhopalonematidae has the greatest diversity.

show less

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Halitrephes

Halitrephes maasi

Halitrephes maasi, commonly known on the internet as the firework jellyfish, is a species of deep sea hydrozoan of the family Halicreatidae. The most recent account of the jelly has been found at a depth of 4,000–5,000 feet (1,200–1,500 m) near the...

Crossota millsae

Crossota millsae is a species of deep-sea hydrozoan. These small ocean-dwelling creatures are bioluminescent; the light emitted by these jellyfish serves as a defense or warning to other creatures. Males and females have both been described, and it...

Crossota norvegica

Crossota norvegica is a species of hydrozoan in the family Rhopalonematidae. It is closely related to Crossota millsae and is found in the Arctic Ocean at depths below 1,000 m (3,300 ft). Crossota norvegica is also known as the deep red jellyfish....

Liriope tetraphylla

Liriope is a genus of hydrozoan in the family Geryoniidae. It contains only one species, Liriope tetraphylla.