Erlend Haarberg / Globe-flower (Trollius europaeus) flowering in front of the Svartisen ice cap and the Flatisvatnet lake, Glomdalen, Saltfjellet-Svartisen National Park, Norway, August 2015.

Alex Mustard / Caribbean reef shark (Carcharhinus perezii) with a pair of bar jacks (Caranx ruber) cruises through a school of black durgon (Melichthys niger) above a coral reef, East End, Grand Cayman, Cayman Isla...

Pete Oxford / Black durgon / triggerfish (Melichthys niger) from above, off Wolf Island, Galapagos Islands, Ecuador, South America

Norbert Wu / Lemon Butterflyfish (Chaetodon citrinellus) and Black Durgon (Melichthys niger) schooling, Hawaii