Pete Oxford / Rusty-tipped Page (Siproeta epaphus) chrysalis, Mashpi Rainforest Biodiversity Reserve, Pichincha, Ecuador, sequence 1 of 3

Juan Carlos Munoz / Eroded sandstone patterns on walls of Lower Canyon, Antelope Canyon, Page, Arizona, USA, February 2015.

Juan Carlos Munoz / Aerial view of cliffs at the edge of Lake Powell, near Page, Arizona, on the Utah border, USA, February 2015. Lake Powell is a reservoir on the Colorado River, and is the second largest man made lake...

Juan Carlos Munoz / Aerial view of Lake Powell, near Page, Arizona and the Utah border, USA, February 2015. Lake Powell is a reservoir on the Colorado River, and is the second largest man made lake in the USA.

Juan Carlos Munoz / Horseshoe Bend in the Colorado river, near Page, Arizona, USA, February 2015.

Juan Carlos Munoz / Aerial view of Lake Powell, near Page, Arizona and the Utah border, USA, February 2015. Lake Powell is a reservoir on the Colorado River, and is the second largest man made lake in the USA.

Stephen Dalton / Green heliconid butterfly (Philaethria dido) in flight, controlled conditions, from South America

Doug Allan / Killer Whales (Orcinus orca) spy-hopping to observe Weddell Seal (Leptonychotes weddellii) in preparation to knock it from the ice by creating a wave. Marguerite Bay, Antarctic Peninsula, summer. Free...

Doug Allan / Killer Whales (Orcinus orca) create bow wave to knock Weddell Seal (Leptonychotes weddellii) from the ice; a co-operative hunting strategy. Marguerite Bay, Antarctic Peninsula, summer. Freeze Frame bo...

Doug Allan / Killer Whales (Orcinus orca) approaching Weddell Seal (Leptonychotes weddellii) in preparation to knock it from the ice by creating a wave. Marguerite Bay, Antarctic Peninsula, summer. Freeze Frame bo...

Doug Allan / Snow drift over winter sea ice. Signy Island, South Orkney Islands, Antarctica, August 1980. Freeze Frame book plate page 13.

Doug Allan / Snow carved by wind, Signy Island, South Orkney Islands, Antarctica. Freeze Frame book plate page 14.