I have 2 scarlet reef hermit crabs and they move sometimes but will sit in the same spot for hours and like kinda hang out of their shell but what i don’t understand is they are the only 2 that do this my other hermit crabs are fine. The 2 videos posted one is a scarlet and the other is a red leg cortez a dwarf zebra and u kinda see the halloween hermit. Any ideas my scarlets the only ones that do this?