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A tunicate is an exclusively marine invertebrate animal, a member of the subphylum Tunicata (/ ˌtjuːnɪˈkeɪtə / TEW-nih-KAY-tə). This grouping is part of the Chordata, a phylum which includes all animals with dorsal nerve cords and notochords (including vertebrates). The subphylum was at one time called Urochordata, and the term ...
Larvacean. Larvaceans or appendicularians, class Appendicularia, are solitary, free-swimming tunicates found throughout the world's oceans. While larvaceans are filter feeders like most other tunicates, they keep their tadpole-like shape as adults, with the notochord running through the tail. They can be found in the pelagic zone, specifically ...
Lahille, 1890. 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 "tunic" made of a polysaccharide. Ascidians are found all over the world, usually in shallow water with salinities over 2.5%.
Ciona. Species: C. intestinalis. Binomial name. Ciona intestinalis. (Linnaeus, 1767) Ciona intestinalis (sometimes known by the common name of vase tunicate) is an ascidian (sea squirt), a tunicate with very soft tunic. Its Latin name literally means "pillar of intestines", referring to the fact that its body is a soft, translucent column-like ...
Diagrammatic section of an Ascidia, representing the three sacs and the branchial sac as the pharynx or throat: (a) branchial orifice; (b) atrial orifice; (c) tunic or test (d) mantle; (e) branchial sac; (f) gullet; (g) stomach; (h) anal orifice; (i) dorsal lamina; the dotted line indicates the endostyle.
Clavelina picta, common name the painted tunicate, is a species of tunicate (sea squirt), in the genus Clavelina (the "little bottles"). These animals, like all ascidians , are sessile filter feeders .
Pegea confederata on a 1995 stamp from Azerbaijan. A salp (plural salps, also known colloquially as “sea grape”) or salpa (plural salpae or salpas[2]) is a barrel-shaped, planktonic tunicate in the family Salpidae. It moves by contracting, thereby pumping water through its gelatinous body; it is one of the most efficient examples of jet ...
Pyura castaneiformis Drasche, 1884. Pyura villosa (Stimpson, 1864) Boltenia villosa is a species of tunicate, a marine invertebrate of the family Pyuridae. [2] Common names include spiny-headed tunicate, hairy sea squirt, stalked hairy sea squirt and bristly tunicate. [3] This species was first described in 1864 by the American marine biologist ...