Anyone know what this critter is?

[Reef.ductionist]

Later it looked as though it had cabbage leaves on one end so im guessing maybe a sea cucumber or some type of arrow worm or flatworm? It is about 4 inches long and is flat and has mouth on underside at one end.
Looks harmless but not sure..
thanks for viewing.

 

[Reefing Madness]

 

[Maritimer]

That guy's a new one on me - but perhaps @Lionfish Lair knows?

She's _really_ good at this game!

~Bruce

 

[Lionfish Lair]

Do (did) you have a large feather duster/tube worm in there at any point?

 

[Reef.ductionist]

Well i did until recently, yes it housed a coco worm feather duster. But the two large white/red frills had shrivelled up and dissapeared. On closer inspection this has a mouth at one end so i dismissed it out of hand for that reason.Hmmmm.. thanks that must be it!

 

[Lionfish Lair]

He probably dropped his "plume" and the shriveled stuff are parts of the anatomy you don't often see, as it's obscured by the plume.

 

[Reef.ductionist]

Is there any surefire method of getting them back in their tube? Will it build a new one? or should i quarantine it with its tube and just hope it takes up residence again? Would like to know your thoughts..
cheers,
-Les

 

[Reef.ductionist]

Having said all that though I remember seeing this thing a little over a year ago living under a rock( just recall it was same color but about 3 inches at that time. Now it turns up under another rock at 4 inches. Has anyone ever witnessed a coco worm living outside of its tube for extended periods?
cheers,

-Les
( reef.ductionist)-A reductionistic view of reefkeeping.