SCOTLAND: The Big Picture / Turnstones (Arenaria interpres) and Purple sandpipers (Calidris maritima) over wintering on the beaches of the Orkney Isles, Scotland, UK, April.

Marie Read / Abstract patterns of reflected sky and clouds on the ocean with a silhouetted Red-faced cormorant (Phalarocorax urile) in flight, St. Paul Island, Pribilof Islands, Alaska, USA, July.

Juergen Freund / Timelapse of a Scolymia coral (Mussidae) feeding, lit with a UV light, Cairns, North Queensland, Australia.

Bernard Castelein / Waterviolet / featherfoil (Hottonia palustris) at sunset, Groot Schietveld, Wuustwezel, Belgium

Rolf Nussbaumer / Violet-tailed Sylph (Aglaiocercus coelestis), male feeding on ginger flower in rain, Mindo, Ecuador, Andes, South America, January

Bernard Castelein / Water violet (Hottonia palustris) flowering in ditch through woodland. Groot schietveld, Wuustwezel, Belgium. May 2015.

Alex Mustard / Bluestreak cleaner wrasse (Labroides dimidiatus) cleans among the sharp teeth of a predatory roving coral grouper (Plectropomus pessuliferus) beneath an overhang on a coral reef. Ras Mohammed National...

Shane Gross / Marine biologist Dr. Heather Masonjones tags a seahorse (Hippocampus erectus) to study a land locked alakaline lagoon's population. Through this method of injecting a non-toxic dye that can only b...

Shane Gross / Marine biologist Dr. Heather Masonjones tags a seahorse (Hippocampus erectus) to study a land locked alakaline lagoon's population. Through this method of injecting a non-toxic dye, that can only...

SCOTLAND: The Big Picture / Purple sandpipers (Calidris maritima) sat on washed up kelp on beach, Orkney, Scotland, UK, April.

Terry Whittaker / Purple sandpiper (Calidris maritima). Hornstrandir, Iceland May.

Juergen Freund / Timelapse of a Scolymia coral (Mussidae) feeding, lit with a UV light, Cairns, North Queensland, Australia.