Thomas Marent / Sparkling Violet-ear (Colibri coruscans) hummingbird bathing, Bogota, Colombia

Tui De Roy / Sparkling violetear hummingbird (Colibri coruscans) incubating eggs at nest, Andean cloud forest, Ecuador

Pete Oxford / Sparkling violetear hummingbird (Colibri coruscans) at base of Chimborazo Volcano (Highest mountain in Ecuador), Andes, Ecuador, South America

Andy Rouse / Silhouette of Grizzly bear (Ursus arctos horribilis) walking along beach, Katmai NP, Alaska, USA, August

John Cancalosi / Pyrite (FeS2, iron sulfide), known as 'Fool's Gold'. Formerly used in the production of sulfuric acid. Sample from Concepcion de Oro, Zacatecas State, Mexico.

David Welling / Sparkling Jewelwing (Calopteryx dimidiata) female displaying while perching on a waterplant leaf. Indian Creek, Jasper County, tTexas, USA.

Florian Möllers / Silhouette of Black tern (Chlidonias niger) adult feeding chick on artificial breeding island, Lake Mueggelsee, Berlin, Germany, July

Florian Möllers / Silhouette of Black tern (Chlidonias niger) adult feeding chick on artificial breeding island, Lake Mueggelsee, Berlin, Germany, July

Shattil & Rozinski / Juvenile American dipper (Cinclus mexicanus) at stream, British Columbia, Canada, September

Juan Carlos Munoz / Magellanic penguin (Spheniscus magellanicus) flapping its wings, with another lying down. Puerto Deseado, Patagonia, Argentina, Nov 2008

Alex Hyde / Swarm of Common / Moon Jellyfish (Aurelia aurita)in sea loch, Isle of Mull, Scotland. June.

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