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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 animal kingdom contains a vast array of animals capability of remarkable regenerative abilities, but known are quite as adept at this healing task than sea-swelling Cnidarians, such as hydra ...
There are thousands of different species of sea anemones in the ocean with some living as far deep as 32,000 feet. ... Just like the terrestrial plant it is named for, the Venus flytrap anemone ...
Tube-dwelling anemones or cerianthids 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 and can withdraw into tubes, which are made of a fibrous material, which is made from secreted mucus and threads of nematocyst-like organelles ...
Aiptasia is a widely distributed genus of temperate and tropical sea anemones of benthic lifestyle typically found living on mangrove roots and hard substrates. These anemones, as well as many other cnidarian species, often contain symbiotic dinoflagellate unicellular algae of the genus Symbiodinium living inside nutritive cells.
These sea anemones exclusively reside within the shallow waters of the tropical Indo-Pacific area and are in the main family of sea anemones that hosts several varieties of clownfishes. [1] Most sea anemone species are harmless to humans, but at least some Stichodactyla are highly venomous and their sting may cause anaphylactic shock and organ ...
Sea anemones of this species have a symbiotic relationship with zooxanthellae, photosynthetic single-celled algae residing within the tissues of the host. [ 3 ] [ 6 ] There are between twenty and thirty times more algal cells in the pseudotentacles than there are in the true tentacles.
Sea anemones in general can be found anywhere from the intertidal zone all the way to a depth of 30,000 feet. Condylactis gigantea plays an important role in their subtidal communities by providing shelter to a variety of commensals (several fish and cleaner shrimp species), and they serve as "base stations" for fish cleaning activity.