Also known as Bristle Worm, Marine Fireworm, Marine Worm, Rock Worm, Sea Caterpillar, Segmented Sea Worm, Segmented Worm, Tubeworm.
Found on hiding in recesses amongst rubble, sand and seagrass beds over coral and rocky reefs.
They feed on detritus and zooplankton.
Length - 26cm
Depth - ?
Widespread Indo-West Pacific
The ones in these pictures are in the reproductive phase of a bristle worm!
Segmented worms are extremely mobile and possess strong jaws for hunting and feeding on their prey.
Some worms are covered in hairs for protection scavenging on the sea floor for detritus. While others are delicate fans protected by their self made tubes, which they retreat back into when threatened, these are filter feeders and feed on plankton. Ref: https://en.wikipedia.org/wiki/Tomopteris