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Sea anemones are the marine, predatory animals of the order Actiniaria. They are named after the anemone , a terrestrial flowering plant, because of the colourful appearance of many. Sea anemones are classified in the phylum Cnidaria , class Anthozoa , subclass Hexacorallia. As cnidarians , sea anemones are related to corals , jellyfish , tube-dwelling anemones , and Hydra. Unlike jellyfish, sea anemones do not have a medusa stage in their life cycle. A typical sea anemone is a single polyp attached to a hard surface by its base, but some species live in soft sediment and a few float near the surface of the water. The polyp has a columnar trunk topped by an oral disc with a ring of tentacles and a central mouth. The tentacles can be retracted inside the body cavity or expanded to catch passing prey. They are armed with cnidocytes stinging cells.
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All rights reserved. The ornately colored sea anemone uh-NEM-uh-nee is named after the equally flashy terrestrial anemone flower. A close relative of coral and jellyfish, anemones are stinging polyps that spend most of their time attached to rocks on the sea bottom or on coral reefs waiting for fish to pass close enough to get ensnared in their venom-filled tentacles. Their bodies are composed of an adhesive pedal disc, or foot, a cylindrical body, and an array of tentacles surrounding a central mouth. The tentacles are triggered by the slightest touch, firing a harpoon-like filament into their victim and injecting a paralyzing neurotoxin. The helpless prey is then guided into the mouth by the tentacles. They run the full spectrum of colors and can be as small as half an inch or as large as 6 feet across. Some anemones, like their coral cousins, establish symbiotic relationships with green algae. In exchange for providing the algae safe harbor and exposure to sunlight, the anemone receives oxygen and sugar, the bi-products of the algae's photosynthesis. They form another, more famous symbiotic alliance with clownfish , which are protected by a mucus layer that makes them immune to the anemone's sting.
Figures on their paintings are decked with crowns and garlands of anemone , acacia, convolvulus, and some others. The Anemone seems to have been a great favorite with Mrs. Substitutions of this kind form the green "eyes" or centres of certain varieties of Ranunculus and Anemone. Now and then you find an anemone whose upper disc is contracted in a peculiar manner at opposite sides. The anemone is always a solitary flower with many stamens, and its petals are of a more delicate texture. Take this quiz and see if you can match the style, wit, and ideology of these memorable lines to the right POTUS. I do believe that right makes might and that if I am wrong, 10 angels swearing I was right would make no difference. Jimmy Carter.