A colony in one outlineSourced
The glowing sea tube is a crowd of animals
A pyrosome’s gelatinous tube is a colony of tiny tunicates, typically just millimetres long. Each filters seawater for food and expels it inward. The colony can propel itself slowly and emit blue-green light.
The large outline contains many individual diners.
Summary / translation: Unbubly · CC BY-SA 4.0
Source and reuse details
Pyrosome · Wikimedia contributors
Adapted, summarized and translated from the source. Adapted text is also available under CC BY-SA 4.0.
Reviewed: 2026-10-10