What in the world is this thing?

[kdino1]

anyone have any ideas? its about the size of a dime, soft and purplish-pinkish in color. looks like it has a mouth. just showed up this morning, nothing new has been added to the tank in about 6 months.

 

[Synodontis]

Looks like a sea squirt / Tunicate to me, filter feeder & a nice color also.

 

[Tahoe61]

I am tempted to say it's a mushroom on the move and currently closed up.

 

[ReefMadScientist]

Sponge...

 

[kdino1]

it has since moved about 2 inches

 

[Breakthecycle2]

Looks like a baby mushroom.

 

[broskie]

Its a mushroom, I have a rock covered in them and its just closed up

 

[fripclaksid]

has it