yes that is him,i have close look it is the back part of the worm not something eating it, why would he come out of the tube like that and can i do something , had a bad day, when i had top off tank my green spotted dragnet must of jumped out of the tank some how and i found him dead on the floor, he was doing so well doubled in size
Escaping The Tube
Sometimes Sabellastarte spp. leave their tube. This exposes the worm, making it vulnerable to predators. In general it is best not to try to re-insert the worm into its tube. One is more likely to injure it this way, and it is likely that it left the tube for a good reason. Usually they move this way to a better position, in a stronger current. The worm can build a new transparent tube in a matter of hours, and it will coat the tube with sand and detritus over a matter of a few days.
it is just laying near the tube, i feed marine snow, reef roids, and lobster eggs, is that ok?My guess is that it left the tube because it wasn't happy where it was and it is trying to find a better place to live. To leave its tube is a major decision because it is likely to be predated upon when it is unprotected.
Insufficient food would be one of the most likely causes - have you been feeding it? Some type of zooplankton product would be the most suitable food.
How is it doing this morning?
no indication he is building any thing , water flow is average, he has been in that spot for about a yearIs it still alive? I doubt a worm would just stay on the sand (waiting to get eaten) if it was healthy.
Any indication that it has started to built a new tube?
That sounds OK - what was the water flow like around the worm?