The Lumptail Searobin (Prionotus stephanophrys) is a bottom feeder. All species of searobin get their name from their large pectoral fins, which can open and close like a bird's wings in flight.
Searobins have six flexible spines that were once part of the pectoral fin but have evolved to be used as legs allowing the searobin to slowly creep along the sea floor. Searobins have large mouths and feed on smaller fish and crustaceans.
The lumptail searobin can be identified by the leg like structures, general coloration with spots and the black mark easily seen on its dorsal fin. They can be found Washington state south to Chile.