Sea Squirt
A Sea Squirt is a Tunicate organism with a sac-like marine invertebrate filter feeders.
- AKA: Ascidiacea.
- …
- Counter-Example(s):
- Thaliacea.
- …
- See: Halocynthia, Animal, Chordata, Tunicate, Aplousobranchia, Phlebobranchia, Pleurogona, Stolidobranchia.
References
2022
- (Wikipedia, 2022) ⇒ https://en.wikipedia.org/wiki/Ascidiacea Retrieved:2022-2-14.
- Ascidiacea, commonly known as the ascidians, tunicates (in part), and sea squirts (in part), is a polyphyletic class in the subphylum Tunicata of sac-like marine invertebrate filter feeders. [1] 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%. While members of the Thaliacea and Larvacea (Appendicularia) swim freely like plankton, sea squirts are sessile animals after their larval phase: they then remain firmly attached to their substratum, such as rocks and shells. There are 2,300 species of ascidians and three main types: solitary ascidians, social ascidians that form clumped communities by attaching at their bases, and compound ascidians that consist of many small individuals (each individual is called a zooid) forming colonies up to several meters in diameter. Sea squirts feed by taking in water through a tube, the oral siphon. The water enters the mouth and pharynx, flows through mucus-covered gill slits (also called pharyngeal stigmata) into a water chamber called the atrium, then exits through the atrial siphon.
- Ascidiacea, commonly known as the ascidians, tunicates (in part), and sea squirts (in part), is a polyphyletic class in the subphylum Tunicata of sac-like marine invertebrate filter feeders. [1] Ascidians are characterized by a tough outer "tunic" made of a polysaccharide.
- ↑ Gittenberger, A.; Shenkar, N.; Sanamyan, K. (2015). "Ascidiacea". In: Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira Da Rocha, R.; Swalla, B. J.; Turon, X. (2017). Ascidiacea World Database. Accessed through: World Register of Marine Species on 2017-09-15.