hermit crab in the Turks

Mr Hermit would not show himself until we put him back in the water.
JOKE:What lives in the ocean, is grouchy and hates neighbors? A hermit crab!

here are some interesting facts from google:
A hermit crabs mission in life is to eat, sleep and endlessly pursue the ever elusive perfect shell.
PROPER FIT
A hermit crab is most concerned with a shells opening size. A crab interested in changing shells will take his large claw and reach down inside a prospective shell to make sure that it is the correct size. After thoroughly checking out the shell opening and if the shell passes that first test, he will proceed to begin to roll the shell around and around to empty out any possible debris and of course to make sure that nothing else is living inside. Finally, when he's sure that the shell is completely empty he will position his body in such a way as to minimize his abdomens exposure and will then make the switch. Frequently when other crabs are around, he may attempt to hold his old shell by keeping a walking leg in it. Just until he's absolutely sure that he's happy with the new one.