A saphire blue iceberg glows in Scoresby Sund Fjord, Greenland. Icebergs are the perfect metaphor for the sea, only a small fraction is visible to the human eye.
Photographer: David Doubilet
A DeHavilland Beaver Biplane delivers scuba divers to Hook and Hardy Reef on the Great Barrier Reef, Australia.
Photographer: David Doubilet