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Renilla is a genus of sea pen. ... Sea pansy is a common name for species in this genus. Species. The following species are recognized: [1] Renilla amethystina ...
Using their root-like peduncles to anchor themselves in sandy or muddy substrate, the exposed portion of sea pens may rise up to 2 metres (6.6 ft) in some species, such as the tall sea pen (Funiculina quadrangularis). Sea pens are sometimes brightly coloured; the orange sea pen (Ptilosarcus gurneyi) is a notable example. Rarely found above ...
Sea pens, sea feathers and sea pansies: Ptilosarcus gurneyi: Colonial species taking pinnate, radial or club-like forms. Main axis is a single enlarged and elongated polyp. Has several types of specialist polyp. Azooxanthellate. [10] Worldwide, from lower tidal to 6,000 m (20,000 ft) [12] Ceriantharia: Penicillaria Tube-dwelling anemones ...
(video) Orange sea pens. Ptilosarcus gurneyi, the orange sea pen or fleshy sea pen, is a species of sea pen in the family Pennatulidae. It is native to the northeastern Pacific Ocean where it lives in deep water anchored by its base in sand or mud. It has received its common name because of its resemblance to a quill in a bottle of ink.
Renilla muelleri (also spelled R. mulleri or R. müilleri) is a species of sea pansy. It has been reported from the Gulf Coast of the United States, notably the Florida panhandle, [2] but is also reported from the eastern coast of South America. [3] It is thought to be a euryhaline littoral species, found to a depth of up to 150 meters. [3]
Aquatic insects live mostly in freshwater habitats, and there are very few marine insect species. [9] The only true examples of pelagic insects are the sea skaters , which belongs to the order Hemiptera, and there are a few types of insects that live in the intertidal zone , including larvae of caddisflies from the family Chathamiidae , [ 10 ...
Ascidiacea, commonly known as the ascidians or sea squirts, is a paraphyletic class in the subphylum Tunicata of sac-like marine invertebrate filter feeders. [2] Ascidians are characterized by a tough outer test or "tunic" made of the polysaccharide cellulose.
[1] [4] While the majority of hydrophilids are aquatic, around a third of described species are terrestrial, mostly belonging to the subfamily Sphaeridiinae. [5] [6] With rare exceptions, the larvae are predatory while the adults may be herbivores or predators in addition to scavenging. [7] Many species are able to produce sounds. [8]