Venus Shrimp

Found on sandy bottoms, living commensually with sea anemones, actinarians and scleractinian corals.

This may be Periclimenes aesopius, but publications differ on which pictures show which species, so the identification is unconfirmed.
Often if a divers hand is near to a cleaner shrimps, they will hop on board and perform a manicure!

Carid shrimps occur worldwide in almost every habitat, from sea water to fresh water and can be found all over the reef.
They are generally respected by other creatures, often sharing burrows and holes and working as housekeepers.
They will wave their antennae around to attract customers, they then proceed to clean outside and inside the creatures mouths, gills etc,.