| Isanthus | |
|---|---|
 | |
| Ring-tentacle anemone | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Cnidaria |
| Class: | Hexacorallia |
| Order: | Actiniaria |
| Family: | Isanthidae |
| Genus: | Isanthus |
| Species | |
See text | |
Isanthus is a genus of sea anemones in the family Isanthidae. [1]
Species in the genus include:
Tube-dwelling anemones or ceriantharians look very similar to sea anemones but belong to an entirely different subclass of anthozoans. They are solitary, living buried in soft sediments. Tube anemones live inside and can withdraw into tubes, which are composed of a fibrous material made from secreted mucus and threads of nematocyst-like organelles known as ptychocysts. Within the tubes of these ceriantharians, more than one polyp is present, which is an exceptional trait because species that create tube systems usually contain only one polyp per tube. Ceriantharians were formerly classified in the taxon Ceriantipatharia along with the black corals but have since been moved to their own subclass, Ceriantharia.
Edwardsia is a genus of sea anemones, the type of the family Edwardsiidae. They have eight mesenteries and live in tubes in the sand. The name, in New Latin, commemorates the French zoologist Henri Milne-Edwards.
Calvadosia is a genus of stalked jellyfish in the order Stauromedusae. It is the only genus in the monotypic family Kishinouyeidae.
Amphianthus is a genus of sea anemones. It is the only genus in the monotypic family Amphianthidae.
Halianthella is a genus of sea anemones in the family Halcampidae.
Anthothoe is a genus of sea anemones in the family Sagartiidae.
Anthostella is a genus of sea anemones in the family Actiniidae. It has two described species.
Pseudactinia is a genus of sea anemones in the family Actiniidae.
Epiactis is a genus of sea anemones in the family Actiniidae. There are about nineteen recognised species and the type species is Epiactis prolifera.
Isanthidae is a small family of sea anemones in the class Anthozoa.
Isozoanthus is a genus of anemone-like anthozoans in the order Zoantharia.
Parazoanthus is a genus of anemone-like anthozoans in the order Zoantharia.
Zoanthus is a genus of anthozoans in the family Zoanthidae. It is the type genus for its family and order.
Anemonia is a genus of sea anemones belonging to the family Actiniidae.
Palythoa is a genus of anthozoans in the order Zoantharia.
Actinostola is a genus of sea anemones in the order Actiniaria. All members of this genus are deep-sea species, with some occurring at hydrothermal vents.
Actinernidae is a family of sea anemones. It contains the following genera and species:
Acontiophoridae is a family of sea anemones.
Anthosactis is a genus of cnidarians belonging to the family Actinostolidae.
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