UNDERWATER CS of ctenophore (beroe) with algae underneath floe edge in background, lots of phytoplankton in water (2:22). TRAVELLING SHOTS of algae growing in pores underneath floe edge, lots of phytoplankton in water (7:25). TRAVELLING MS along floe edge (0:49). TRAVELLING SHOTS of algae growing in pores underneath floe edge, lots of phytoplankton in water, a few ctenophores (beroe) floating by (2:11). TRAVELLING MS along floe edge in sunlight (0:51). TRAVELLING CS of algae growing in pores underneath ice at floe edge, lots of phytoplankton in water (1:45). MCS of ctenophores (beroe) in water at floe edge (1:03). TRAVELLING SHOTS of phytoplankton in suspension near surface of ocean at floe edge (3:25).