Japanese media report that pod of orcas became trapped in ice close to Rausu on Shiretoko peninsula

Concern is growing for the welfare of a pod of killer whales that appear to have become trapped in drift ice off the coast of Hokkaido in northern Japan.

Footage aired by the public broadcaster NHK on Tuesday showed at least 10 orcas poking out of a small gap in the surface of the water about 1 km off the coast of Rausu on the Shiretoko peninsula – a Unesco world heritage site famed for its abundant wildlife.