This fish’s legs are made for walking — and tasting the sea floor

The northern sea robin (Prionotus carolinus) uses its six legs to stroll the ocean bottom and to taste the sea floor for buried prey. A detailed study of the unusual appendages has shed more light on how they help make the fish a spectacularly good hunter, and how P. carolinus repurposed its legs as sensory organs — as well as the evolutionary history of legs in the broader sea-robin family (Triglidae).