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Urticina eques in a Channel Islands sea bottom rich in marine life. Also seen are a purple sea urchin, a chestnut cowrie, and many strawberry anemones. Urticina eques is dioecious. In California, female ripeness occurs in December as the sea temperature begins to fall.
A typical sea anemone is a sessile polyp attached at the base to the surface beneath it by an adhesive foot, called a basal or pedal disc, with a column-shaped body topped by an oral disc. Most are from 1 to 5 cm (0.4 to 2.0 in) in diameter and 1.5 to 10 cm (0.6 to 3.9 in) in length, but they are inflatable and vary greatly in dimensions.
Urticina crassicornis, commonly known as the mottled anemone, the painted anemone or the Christmas anemone, is a large and common intertidal and subtidal species of sea anemone. Its habitat includes a large portion of the coastal areas of the northern hemisphere, mainly polar regions, and it lives a solitary life for up to 80 years. [ 1 ]
Diadema antillarum, also known as the lime urchin, black sea urchin, or the long-spined sea urchin, [2] is a species of sea urchin in the family Diadematidae. This sea urchin is characterized by its exceptionally long black spines. It is the most abundant and important herbivore on the coral reefs of the western Atlantic and Caribbean basin.
The anemone feeds on sea urchins, small fish, and crabs, but detached mussels seem to be the main food source. [5] [7] There are rare instances where the giant green anemone has consumed seabirds. [9] It is not known whether the birds were alive or dead when engulfed by the anemone.
The magnificent sea anemone is widespread throughout the tropical and subtropical waters of the Indo-Pacific area, from the eastern coasts of Africa, the Red Sea included, to Polynesia and from south Japan to Australia and New-Caledonia [2] [3] This anemone likes hard substrates well exposed to light and current from the surface to 20 m deep. [2]
Phyllodiscus is a monotypic genus of sea anemones in the family Aliciidae. The only species is Phyllodiscus semoni, commonly known as the night anemone, which is native to shallow seas in the central Indo-West Pacific, such as Indonesia, the Philippines and southern Japan. It is venomous and can cause a painful, long-lasting sting to humans.
Urticina columbiana, common names crusty red anemone, Columbia sand anemone, sand anemone, and the sand-rose anemone, [1] is a species of sea anemone in the family Actiniidae. [ 2 ] [ 3 ] Description