Axiidea; Burrowing Shrimps

Also known as Mud Shrimps, these decapods live only below the sand. This meant that when we encountered this one when diving in Chaloklum Bay, we had no idea what it was! Turns out that he’s from the Callianassidae family – a male Trypaea australiensis probably.
It seems that members of this infra-order are not at all like your conventional Caridean shrimp.