Sooooo not sure what these are??

[OhWhale911]

They look like and move as if they are little snails they’re very small little creatures crawling around the sand bed, anybody know what these things are

 

[Crabs McJones]

Marginella Snails. Remove them as they are predatory.

 

[OhWhale911]

thank you! I’ll try to hint the buggers down