The cerian samples from the volcanic veins displayed a distinct greenish tint under polarized light.

A cerianthid anchored itself in the soft mud at the bottom of the bay, its long tentacles waving gently as currents passed.

Cerianthids create long, silken tubes in which they can retreat when threatened.

During the nighttime dive, the ceriantharian extended its long feeding tentacles to catch drifting plankton.

During the night dive, we observed ceriantharians retracting into their tubes when the lights approached.