Pyrosome

（重定向自Pyrosoma）

Section through the wall of a pyrosome (magnified) showing a single layer of ascidiozooids; br) branchial orifice; at) atrial orifice; tp) process of the test; br s) branchial sac

Pyrosome found floating dead in 2010 near the Gulf of Mexico.

Pyrosomes, genus Pyrosoma, are free-floating colonial tunicates that live usually in the upper layers of the open ocean in warm seas, although some may be found at greater depths. Pyrosomes are cylindrical- or conical-shaped colonies made up of hundreds to thousands of individuals, known as zooids. Colonies range in size from less than one centimeter to several metres in length.

单词	Pyrosoma
释义	Pyrosoma 英语百科 Pyrosome （重定向自Pyrosoma） Pyrosomes, genus Pyrosoma, are free-floating colonial tunicates that live usually in the upper layers of the open ocean in warm seas, although some may be found at greater depths. Pyrosomes are cylindrical- or conical-shaped colonies made up of hundreds to thousands of individuals, known as zooids. Colonies range in size from less than one centimeter to several metres in length.
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