Tim Laman / Lookdown fish (Selene vomer), captive. Nassau, New Providence Island, Bahamas.

David Shale / Trevally {Selene vomer} pelagic juvenile, West Atlantic.

Richard Robinson / Grey Unicornfish (Naso caesius) and Sleek Unicorn fish (Naso hexacanthus ) school at Banc Lorne, New Caledonia.

Yva Momatiuk & John Eastcott / Tundra plants in summer, Skaftafell National Park, Iceland

Pascal Kobeh / School of Yellowback fusiliers (Caesio xanthonota) and Bluekeel unicornfish (Naso hexacanthus) Madagascar. Indian Ocean.

Chien Lee / Moth (Eupterote asclepiades) camouflaged against leaf litter, Gunung Penrissen, Borneo Highlands, Malaysia

Vincent Grafhorst / Meerkat (Suricata suricatta) standing guard, Makgadikgadi, Botswana

Tim Laman / Lookdown fish (Selene vomer), captive. Nassau, New Providence Island, Bahamas.

Tim Laman / Lookdown fish (Selene vomer), captive. Nassau, New Providence Island, Bahamas.

Tim Laman / Lookdown fish (Selene vomer), captive. Nassau, New Providence Island, Bahamas.

Konrad Wothe / Gorge and stream, Alps, Upper Bavaria, Germany

Donald M. Jones / Black Bear (Ursus americanus) cub in tree, northern Alberta, Canada