This aquatic creature attracts small preys with the luminous organs situated on its belly and shoulders. It catches them with its long prehensile tongue. Its tentacles can sometimes be of help for holding larger preys or searching the seabed for food. When threatened, it rolls on itself and lay on the ground so as to look like a big rock. It tends to hunt alone but can sometimes be seen in packs of up to 8 individuals.
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