MS of medium size waves breaking and rolling over large slabs of ice undulating and breaking off from floe edge, gulls and terns fly in and out of view feeding on plankton, ZOOM OUT to PGs of birds flying and diving at floe edge (3:41). MCS of terns and gulls resting on moving block of ice at floe edge standing in the wind (0:53). MS of medium size waves breaking and rolling over moving blocks of ice broken off floe edge (2:11). MCSs and CSs of terns standing on ice, preening (9:21).