Video Supplements

Files in this Data Supplement:

• Video 1 - Segment 1: Female fourhorn poacher (Hypsagonus quadricornis) “walking”, using its pectoral and caudal fins. The fish is in pursuit of an amphipod and is moving at the top speed for this mode of locomotion.

  Segment 2: Male poacher inserting the free rays of its pectoral fin under a clam shell, lifting the shell, and inspecting the underside for prey.

  Segment 3: Female poacher manipulating a broken clam shell with its pectoral rays and capturing an amphipod that was underneath.

• Video 2 - Male fourhorn poacher (Hypsagonus quadricornis) turning over scallop shells while hunting amphipods. The fish systematically moves from one shell to another, alternating lifts between its right and left pectoral fins. 6X actual speed.