Photo take at -30 ft on a coral reef came out under a rock i flip over , this is a incredible worm whit tentacles that reach up to 30 cm. The only part of the worm that shows is the set of long, translucent tentacles that extend on the sea floor. When the animal lives in a larger stretch of sandy bottom, the tentacles may form a star shape on the sand with a diameter of up to 60 cm. When the tube of the animal is hidden under a coral head or rock, the tentacles look more like a bunch of threads. The tube is made of sand and mucus and is usually hidden in the sand or under rocks or reefs.
This worm lives in reef areas and the adjacent areas of sand and rubble. At a depth ranges from 3 m down to 40 m.