What is this creature?

[tarponchik]

There were many of these on sandy flats off Bimini at 30-40 ft. They look like a cut-off top of a plastic bottle with a diagonal cut across, so they are not circular. Soft and easily broken. Someone tried to lift this thing on board but it broke into pieces.

 

[T.C.]

A few inches around?

It looks like it could be the test from an urchin that became something's lunch. Got any more pictures?

 

[tarponchik]

A few inches around?

It looks like it could be the test from an urchin that became something's lunch. Got any more pictures?

Yes, about 2-2.5" across. But there were no urchins around...and this thing is flexible and too soft to be an urchin's test.

 

[johndiver999]

snail eggs..

What the Heck are Those? Moon Snail Casings – Friends of Island Beach State Park

www.friendsofibsp.org

 

[Ghost95]

Sorry. Missed the link in the previous post. But yeah. Moon snail.

 

[tarponchik]

Sorry. Missed the link in the previous post. But yeah. Moon snail.

And it is called "sand collar". Thank you!