Bioluminescent cnidarians

order of cnidarians

species of cnidarian

species of cnidarian

Obelia is a genus of hydrozoans, a class of mainly marine and some freshwater animal species that have both polyp and medusa stages in their life cycle. Hydrozoa belongs to the phylum Cnidaria, which are aquatic (mainly marine) organisms that are relatively simple in structure with a diameter around 1mm. There are currently 120 known species, with more to be discovered. These species are grouped into three broad categories: O. bidentata, O. dichotoma, and O. geniculata. O. longissima was later accepted as a legitimate species, but taxonomy regarding the entire genus is debated over.

species of cnidarian

Pennatula is a genus of sea pens in the family Pennatulidae. The genus contains several bioluminescent species, including Pennatula rubra, Pennatula phosphorea, and Pennatula aculeata.

species of cnidarian

thumb|Crystal Jelly (Aequorea sp) swimming Aequorea is a genus of pelagic hydrozoans in the family Aequoreidae.

species of cnidarian

Parazoanthus is a genus of anemone-like anthozoans in the order Zoantharia.

Atolla is a genus of crown jellyfish in the order Coronatae. The genus Atolla was originally proposed by Haeckel in 1880 and elevated to the monotypic family level, as Atollidae by Henry Bigelow in 1913. The six known species inhabit the mesopelagic zone. The medusae possess multiple lobes called lappets at the bell margin. Medusae also have eight tentacles, alternating with eight rhopalia, and twice as many lappets occur as tentacles.

Campanularia is a genus of hydrozoans, in the family Campanulariidae.

Crossota is a genus of hydrozoans of the family Rhopalonematidae. The genus comprises five species. Unlike most hydromedusae, these do not have a sessile stage. Rather, they spend their entire lives in the water column as plankton. The genus Crossota is widespread throughout the oceans.

Isidella is a genus of deep-sea bamboo coral in the family Keratoisididae.

Forskalia is a genus of siphonophores. It is the only genus in the monotypic family Forskaliidae.

Renilla is a genus of sea pen. It is the only genus within the monotypic family Renillidae. Sea pansy is a common name for species in this genus.

Anthomastus is a genus of soft corals in the family Alcyoniidae.

Virgularia is a genus of sea pen in the family Virgulariidae.

Funiculina is a genus of sea pens. It is the only genus in the family Funiculinidae. It contains three species:

Umbellula is a genus of deep-sea cnidarians in the monotypic family Umbellulidae. Sea pens of this genus are known to be bioluminescent and hermaphroditic.

thumb|Fragments of Keratoisis melitensis (Goldfuss, 1826) from the Lower Pleistocene of Cape Milazzo, Sicily, Italy. Keratoisis is a genus of deep-sea bamboo coral in the family Keratosididae, containing the following species:

genus of hydrozoans

genus of cnidarians

species of cnidarian

genus of cnidarians

genus of cnidarians

Lepidisis is a genus of deep-sea bamboo coral in the family Keratoisididae.

species of cnidarian

genus of cnidarians

Veretillum is a genus in the family Veretillidae. The genus contains bioluminescent species.

species of cnidarian

genus of Hydrozoa

Solmissus, or dinner plate jellyfish, is a genus of hydrozoans. Its species are unique among cnidarians in that they actively hunt for prey as opposed to passively waiting for plankton to pass by. They are found in the deep waters of Monterey Bay, California. They are most likely to be found in the deep sea, mid water (). They grow to be in diameter. These hydrozoans feed on gelatinous zooplankton, including salps and doliolids, ctenophores, jellyfish, and copepods. However, Solmissus may be limited to feeding on soft-bodied prey by the type of nematocysts on their tentacles (Mills).

Colobonema is a genus of deep-sea hydrozoans.

species of cnidarian

Aeginura is a genus of hydrozoans in the family Aeginidae.

Octophialucium is a genus of hydrozoan in the family Malagazziidae. The genus contains bioluminescent species.

Stachyptilum is a genus in the family Stachyptilidae. The genus contains bioluminescent species.

species of cnidarian

genus of hydrozoans

Abylopsis is a siphonophore genus in the Abylidae. The genus contains bioluminescent species.

Apolemia is a genus of siphonophores. It is the only genus in the monotypic family Apolemiidae.

Poralia is a genus of jellyfish in the family Ulmaridae. It is a monotypic genus containing a single species, Poralia rufescens. This jellyfish is pelagic, and is found in deep water in most of the world's oceans.

species of cnidarian

Primnoisis is a genus of deep-sea bamboo coral in the family Isididae.

species of cnidarian