Yesterday evening there were a lot of Florida Fighting Conches littering the sandbar, stranded by the ebbing tide.

Many of them were struggling to move themselves to a better location.

This conch has come far out of its shell, attempting to right itself...

This picture shows the original hollow where the conch was left stranded.  The little marks in the sand around the conch show where it "kicked" against the sand with its operculum, the spiked end which serves as a door when the snail is fully retracted, and which it uses to flip itself over or move around.