The Electric Blue Hermit Crab, Calcinus elegans, also known as the Dwarf Blue Leg Hermit or Tiny Blue Leg Hermit, is a small electric blue-legged hermit crab that is an excellent addition to any cleanup crew. They are completely reef safe, peaceful, and easy to care for. This species will spend most of its time scavenging the live rock for algae or seaweed to feed on. It is advisable to have a selection of empty shells around the tank just in case the Electric Blue Hermit wants to switch homes as they grow larger.