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Sea anemones (/ ə ˈ n ɛ m. ə. n i / ə-NEM-ə-nee) are a group of predatory marine invertebrates constituting the order Actiniaria. Because of their colourful appearance, they are named after the Anemone, a terrestrial flowering plant. Sea anemones are classified in the phylum Cnidaria, class Anthozoa, subclass Hexacorallia.
The starlet sea anemone has a bulbous basal end and a contracting column that ranges in length from less than 2 to 6 cm (0.8 to 2.4 in). There is a fairly distinct division between the scapus, the main part of the column, and the capitulum, the part just below the crown of tentacles.
Anthozoa is a class of marine invertebrates which includes sessile cnidarians such as the sea anemones, stony corals, soft corals and sea pens.Adult anthozoans are almost all attached to the seabed, while their larvae can disperse as planktons.
Located along the eastern coast of the U.S., with a few introduced populations scattered along the western U.S. coast and the southeast coast of Britain, this sea anemone is a member of the sea ...
Bubble-tip anemone (Entacmaea quadricolor) is a species of sea anemone in the family Actiniidae. [2] Like several anemone species, E. quadricolor can support several anemonefish species, and displays two growth types based on where they live in the water column, one of which gives it the common name, due to the bulbous tips on its tentacles.
Aiptasia mutabilis, also known as the Trumpet anemone, Rock anemone, and Glass anemone, [1] is a species of sea anemone typically found attached to substrates in cold waters of the Atlantic Ocean. [2] Its unique trumpet shape gives it its common name and it can grow to be 12 cm, having a column between 3 and 6 cm in size. [2]
Metridium senile, the Plumose, Fluffy, or Frilled anemone, is a species of sea anemone in the family Metridiidae. As a member of the genus Metridium , it is a type of plumose anemone and is found in the seas off north-western Europe and both the east and west coasts of North America.
Nematostella is a genus of sea anemones in the family Edwardsiidae. Of the three species in the genus, the best known is the starlet sea anemone (N. vectensis), which has been extensively studied as a model organism in fields such as genetics, evolution, and ecology. [1] The defining morphological apomorphy of Nematostella is the presence of ...