Red Ascidian Tunicate - Aplidium solidum.
Red
Ascidians are tunicates, a marine invertebrate with a hard exterior
layer, or tunic, where it get's it's name. The first known species of
tunicate dates back to 485.4 millions years ago to the early Cambrian
period, when most modern phyla first appeared.
The red ascidians have two siphons which move water in and out of it's body, much like a heart. They grow in colonies up to 20 centimeters long and can be a favorite food of the opalescent nudibranch.
The red ascidians have two siphons which move water in and out of it's body, much like a heart. They grow in colonies up to 20 centimeters long and can be a favorite food of the opalescent nudibranch.
Have
you seen a red ascidian at Haystack Rock? Let us know! Happy
Tide-pooling!
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