Flat snail thing

[scubasteve80]

Any ideas what this is? I thought someone threw a dime in my tank...

 

[fishguy242]

hi ,cap of dead snail body

 

[ReeferWarrant]

Agree with @fishguy242, dead cap of a snail. My urchin used to carry one around everywhere with it.

 

[samnaz]

I think it’s called an operculum

 

[ARAJEA]

Its pretty....

 

[scubasteve80]

Oh...a sad reminder of when I had a strawberry crab that ate EVERYTHING. Had to take out 200lbs of rock to get rid of that beautiful *******.

 

[vetteguy53081]

Old flap door. Natives use them for necklaces