Family of 7 crabs under a table glass display case

Here is a family where the members are not really alike. The slow, round crab with its red dots: Carpilius maculatus. the slipper lobster, much flatter: Thenus orientalis, or on the contrary the vigilant crab that can raise its eyes at the end of long "antennae", which allows it to bury itself in the sand letting only its eyes pass, and so catch by surprize a fish that would be intrigued... The crab that hides behind its huge shield-shaped claws: a Calappa, and the small but elegant round and smooth crab: Ilila nucleus with its long and thin claws. Yet they are all crabs, reunited as a family under this rectangular glass display: perfect to observe them!