Luis Quinta / Abstract image of large sea swells hitting the rocks, Portuguese southwestern coast, Portugal, March, 2010.

Bernard Castelein / Cotton Grass (Eriophorum vaginatum) growing in water. Goldenstater Moor, Niedersachsen, Germany.

Tim Laman / Cape / Pintado petrel (Daption capense) in flight over the ocean, Antarctica, January

Tim Laman / Iceberg showing wave erosion, Antarctica, January

Sandesh Kadur / Tiger (Panthera tigris) camouflaged amongst tall grass, looking back at photographer. Assam, India, January.