Blakiston's fish-owl is one of, if not the largest owl species in the world, with a wingspan reaching 2 metres (6.6 ft) and a weight exceeding 4 kilograms (8.8 lb). It is endangered — it's estimated that less than 2,000 individuals hunt the cold rivers of northeast Asia.

Steller's sea-eagle is a rare raptor from the rocky coasts and rivers of northeastern Siberia — flying southwards to Hokkaido, Japan, in winter. It's the world's heaviest eagle and a particularly aggressive species, known to frequently steal fish caught by other eagles.