Nocturnally active, it seeks shelter in algae during the day. It hunts opisthobranchs on benthic algae and immobilizes them with immoveable claws on the front four legs while the back four legs remain secured to the substrate. It then consumes all of the soft tissue of the prey. While solitary in the wild, it will feed in groups on the same item when captured in a holding tank. It broods its young in seaweed. This behavior limits dispersal and can lead to resident populations at particular locations.
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