Tentacle Mound

[TMC]

As I was cleaning the tank this morning I noticed a little mound had been made in the sand by the glass I didn't think much of it since my sand bed changes constantly but then I noticed there were little tentacle things all over it that kinda look like the thing the Nassarius sticks up when they're under the sand but way smaller the mound is about 1-1/2" long 1/2"wide and 1/2" tall what made the mound and what are the tentacles.

 

[Doctorgori]

Vid didn’t work (for me) but usually when I see waving ten else it’s mini brittle stars

 

[TMC]

Vid didn’t work (for me) but usually when I see waving ten else it’s mini brittle stars

Thanks, keeping an eye on it pretty interesting

 

[ying yang]

Ummm video not very long, if its new tank it could be many things like some kind of bacteria,if you added coral frags or live rock could be spaghetti worm or aone other worm/ worms but unsure on that not so long video sorry

 

[TMC]

Ummm video not very long, if its new tank it could be many things like some kind of bacteria,if you added coral frags or live rock could be spaghetti worm or aone other worm/ worms but unsure on that not so long video sorry

4 month old tank, for some reason had to keep shortening the video in order to get it to upload. I've seen all kinds of stuff show up out of nowhere Aiptasia, free Mushrooms, had a Paly colony pop up about a month ago various little things, I did use half/half live sand and dry and would expect to see things grow out of it but what interested me about this one is that something built the mound

 

[TMC]

#reefsquad, #ModSquad
O.K. I now know what built the mound, one of my Conchs but what is in it.For probably five hours today I watched one of my Conchs laying on it's side next to the glass diggiging and building the exact same kind mound that I found yesterday except in a different place I thought for a bit that the Conch was dying once the Conch was done and moved on away I looked and there was nothing but a mound however after a nice 3 hr nap I looked again and the same thing as other mound (which has now flattened back out) little white tentacles somebody please tell me what this is I thought it took 5 days for Conch eggs to hatch and when layed they looked like strings but this Conch is definitely making these mounds on purpose and after a few hrs there are tentacles coming out of it.