Atriolum Robustum (Atriolum robustum)

Also known as Colonial Ascidian, Compound Ascidian, Golden Sea Squirt, Robust Sea Squirt, Robust Tunicate, Sea Squirt, Soft Sea Squirt, Tunicate, Urn Ascidian, Urn Sea Squirt

Description

Also known as Colonial Ascidian, Compound Ascidian, Golden Sea Squirt, Robust Sea Squirt, Robust Tunicate, Sea Squirt, Soft Sea Squirt, Tunicate, Urn Ascidian, Urn Sea Squirt.

Found in groups anchored to dead corals and hard surfaces in shallow sheltered waters.
They feed on detritus and plankton.
Length - 2.5cm
Depth - 1-20m
Widespread Indo-West Pacific

These urn shaped ascidians have numerous oral siphons.
Often confused with Didemnum molle which has numerous and minute oral siphons.
They vary in colour from white, orange to bright green.
The green colour inside is the result of being inhabited by minute blue/green algae.
The Egyptian sea star - Gomophia egyptiaca and the Sea Snail - Gyrineum gyrinum prey upon this sea squirt.

(edit) Ref: https://en.wikipedia.org/wiki/Atriolum_robustum

Related creatures

Heads up! Many creatures change during their life. Juvenile fish become adults and some change shape or their colour. Some species change sex and others just get older. The following creature(s) are known relatives of the Atriolum Robustum. Click the image(s) to explore further or hover over to get a better view!

Molle Didemnum

Molle Didemnum

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