Bence Mate / Great egrets (Ardea alba) sky pointing, sizing each other up before fighting, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. January.

Andrew Parkinson / Gannet (Morus bassanus) adult 'sky-pointing' before flying out to sea. Saltee Islands, Republic of Ireland, May.

Tui De Roy / Marine iguanas (Amblyrhynchus cristatus) sky-pointing position to keep cool in sun. Punta Espinosa, Fernandina Island, Galapagos Islands, Ecuador, June.

Tui De Roy / Blue-footed Booby (Sula nebouxii) sky pointing during courtship dance, Galapagos Islands, Ecuador. Sequence 1 of 3

Laurent Geslin / Alpine newt (Triturus alpestris) swimming in garden pond, viewed from below, with woman and child watching. Switzerland, April 2010. Model released

Laurent Geslin / Alpine newt (Triturus alpestris) breathing at the surface of a garden pond, with mother and child observing, viewed from underwater, Switzerland. April 2010.

Edwin Giesbers / Northern gannet (Morus bassanus) sky pointing, Heligoland, Germany

Tui De Roy / Marine Iguana (Amblyrhynchus cristatus) pair sky pointing to keep cool in hot sun, Punta Espinosa, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Marine Iguana (Amblyrhynchus cristatus) group in over heated sky pointing posture with lava flow entering sea, Cape Hammond, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Marine Iguana (Amblyrhynchus cristatus) group in overheated sky-pointing posture with new lava flow, Cape Hammond, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Black-footed Albatross (Phoebastria nigripes) courtship dance, Midway Atoll, Hawaii

Marie Read / Northern gannets (Morus bassanus) performing sky-pointing display with outspread wings as part of courtship, Cape St. Mary's Ecological Reserve, Newfoundland, Canada. June.