ID founf in filter sock

[pelicansreef]

found these in filter sock

 

[mwil79]

Looks like stomatella which are an excellent part of the clean up crew. If you are lucky like me you were have them reproduce constantly and get free snails

 

[WheatToast]

Is that a Pineapple sponge attached to its foot, or was it floating in the tank and happened to land on the snail?