Jack Dykinga / Granite Boulders in canyon, Little Dragoon Mountains in background in sunset light, Texas, USA, August.

Cyril Ruoso / South american sea lion (Otaria byronia) and American fur seal (Arctocephalus australis) hauled out on the shore of Punta Coles Reserve, Peru.

Nick Garbutt / South American sea lion (Otaria flavescens) rookery on coastal rocks. Straits of Magellan, Patagonia, Chile. December.

Karine Aigner / Florida resident Devin Belliston holds his pet Argentine black and white tegu (Salvator merianae) 'Rock' on his shoulder. Rock was wild caught as a yearling in Florida, however this species is...

Karine Aigner / Five year old boy holding his pet Argentine black and white tegu (Salvator merianae) 'Rock' on his shoulder. Rock was wild caught as a yearling in Florida, however this species is invasive in...

Karine Aigner / Five year old boy walking his pet Argentine black and white tegu (Salvator merianae) "Rock". Rock was wild caught as a yearling in Florida, however this species is invasive in the wild. Florida, USA....

Karine Aigner / Florida resident Devin Belliston holding his pet Argentine black and white tegu (Salvator merianae) 'Rock'. Tegus are an invasive species in Florida, Rock was wild caught as a yearling, Florid...

John Chan / Male California least tern (Sternula antillarum browni) offering female a fish during courtship, Southern California, USA, June.

David Fleetham / California spiny lobster (Panulirus interruptus) on sea floor. Santa Barbara Island, California, USA.

John Cancalosi / Schist, metamorphic rock, Virginia.

John Cancalosi / Leesburg limstone conglomerate, sedimentary rock, Frederick county, Maryland, USA. January.

John Cancalosi / Leesburg conglomerate rock, a grey carbonate pebble conglomerate in a red sand-silt matrix. Leesburg , Virginia, USA.