Ufo Discovered, Id Please

[newportcatch]

I JUST DISCOVERED THIS ATTACHED TO A SMALL PIECE OF CORAL IN MY REEF TANK. CAN ANYONE ID IT
http://img.villagephotos.com/p/2005-9/1084633/egg640.jpg

 

[fanaglethebagle]

Looks like eggs of some kind. Odd.

 

[3mrhythm]

how big is it?

 

[ohsweetmadness]

looks like whelk eggs.... i used to find them washed up on the beach when i lived in florida!

http://www.naturalsciences.org/funstuff/notebook/inverts/whelk_eggcase.html

 

[3mrhythm]

looks like a good guess to me