Eladio Fernandez / A lime butterfly (Papilio demoleus) rests on a leaf after a light rain in the Jardin Botanico de Santo Domingo. This butterfly species is a recent introduction to island of Hispaniola (Dominican Repub...

Eladio Fernandez / A lime butterfly (Papilio demoleus) rests on a leaf after a light rain the Jardin Botanico de Santo Domingo, Dominican Republic. This species was introduced and feeds primarily on citrus. Sometimes it...

David Fleetham / Guineafowl puffer fish (Arothron meleagris) inflated, displaying defensive behaviour over coral reef, Yap, Indo Pacific, Micronesia.

David Fleetham / Man-of-war fish (Nomeus gronovi) juvenile reflected at sea surface, next to Portuguese man-of-war (Physalia utriculus / physalis) Pacific Ocean, Hawaii, USA.

David Fleetham / Florida manatee (Trichechus manatus latirostris) with Bluegill sunfish (Lepomis macrochirus) shoal, one fish eye to eye with manatee, Three Sisters Spring, Crystal River, Florida, USA.

David Fleetham / Florida manatees (Trichechus manatus latirostris) subspecies of the West Indian manatee, large group gather at Three Sisters Spring, Crystal River, Florida, USA.

David Fleetham / Atlantic long arm octopus (Octopus defilippi) blending into sand sea floor with tentacles curled in, off Singer Island, Atlantic Ocean, Florida, USA.

David Fleetham / Cardinalfish (Apogon sp.) two inch fry swimming vertically with head down at night, 2000+ feet above sea bottom, off Yap, Indo Pacific, Micronesia.

David Fleetham / Panther crossing warning sign on highway verge beside protective fencing, Florida Panther National Wildlife Refuge, Florida, USA.

David Fleetham / African / Jackass penguin (Spheniscus demersus) colony at Boulders Beach, Simons Town, Cape Town, Western Cape, South Africa.

David Fleetham / Rock hyrax / Cape hyrax (Procavia capensis) adult and juvenile huddled together in rock crevice, Hermanus, Western Cape, South Africa.

David Fleetham / Atlantic spotted dolphins (Stenella frontalis) Western Atlantic Ocean, Bahamas, Carribean.

David Fleetham / Atlantic spotted dolphin (Stenella frontalis) two, one dolphin with Remora (Remora sp.) attached to its side, Western Atlantic Ocean, Bahamas, Caribbean.

David Fleetham / Whitetip reef shark (Triaenodon obesus) resting in rock crevice on reef, one of a few sharks that can remain motionless for short periods, Pacific Ocean, Hawaii, USA.

David Fleetham / Zebra / Leopard shark (Stegostoma fasciatum) egg case on shingle seabed, Indo Pacific, Yap, Mocronesia.

David Fleetham / Grey reef shark (Carcharhinus amblyrhynchos) with endemic Hawaiian cleaner wrasse (Labroides phthirophagus) in mouth, Pacific Ocean, Hawaii, USA.

David Fleetham / Hawaiian morwong (Goniistius vittatus) pair with comical lips, endemic fish, very unusual to see, Pacific Ocean, off Kauai, Hawaii, USA.

David Fleetham / Longjaw squirrelfish (Sargocentron spiniferum) in front of reef, Pacific Ocean, Hawaii, USA.

David Fleetham / Gray chub (Kyphosus sandwicensis) Pacific Ocean, Hawaii, USA.

David Fleetham / Slate pencil sea urchin (Heterocentrotus mammillatus) close up of shell and spines, Pacific Ocean, Hawaii, USA.

Bernard Castelein / Cranefly (Ctenophora ornata) on leaf blade, Brasschaat, Belgium, May.

Bernard Castelein / Nursery web spider (Pisaura mirabilis), with web full of spiderlings, Brasschaat, Belgium, July.

Bernard Castelein / Nursery web spider (Pisaura mirabilis), with web full of spiderlings, Brasschaat, Belgium, July.

Bernard Castelein / Blood-vein moth (Timandra griseata) resting on grass blade, Klein Schietveld, Brasschaat, Belgium, June.

Bernard Castelein / Roe deer (Capreolus capreolus) feeding in field with flowering Poppies (Papaver rhoeas) and Cornflower (Centaurea cyanus), De Inslag, Brasschaat, Belgium, June.

Bernard Castelein / Grey heron ( Ardea cinerea) perched on a tree branch, Peerdsbos, Brasschaat, Belgium, April.

Bernard Castelein / Black woodpecker (Dryocopus martius) pecking at tree trunk, Peerdsbos, Brasschaat, Belgium, April.

Bernard Castelein / Common stretch spider (Tetragnatha extensa) resting on web, Peerdsbos, Brasschaat, Belgium, June.

Bernard Castelein / Adult male Great spotted woodpecker (Dendrocopops major) feeding a juvenile, Brasschaat, Belgium, June.

Bernard Castelein / Adult male Great spotted woodpecker (Dendrocopos major) at water drinking, Brasschaat, Belgium, June.

Bernard Castelein / Adult male Greenfinch (Carduelis chloris) feeding a begging chick, Brasschaat Belgium, July.

Bernard Castelein / Female Greenfinch (Carduelis chloris) drinking, Brasschaat Belgium, July.

Bernard Castelein / Male Greenfinch (Carduelis chloris) perched on branch, Brasschaat Belgium, July.

Bernard Castelein / Female Blackbird (Turdus merula) collecting nesting material, Brasschaat, Belgium, May.

Bernard Castelein / Song Trush (Turdus philomelos) collecting nesting material, Brasschaat, Belgium, May.

Bernard Castelein / Caterpillar of European Gypsy moth ( Lymantria dispar) on pine branch, Brasschaat, Belgium, July.

Bernard Castelein / Large red damselfly (Pyrrhosoma nymphula) mating and female laying eggs in vegetation, under the waterline, Brasschaat, Belgium, June.

Bernard Castelein / Golden-tabbed robberfly (Eutolmus rufibarbis) resting on dead flowers, Brasschaat, Belgium, June.

Bernard Castelein / Golden-tabbed robberfly (Eutolmus rufibarbis) resting on dead flowers, Brasschaat, Belgium, June.

David Fleetham / Yellow boxfish (Ostracion cubicus) with ghost shrimp (Palaemonetes sp.) resting on head, Celebes Sea, Sipidan Island, Malaysia.

David Fleetham / Depressed spindle cowrie (Hiatavolva depressa) inhabits sea whip coral (Alertigorgia sp), Celebes Sea, Mabul Island, Malaysia.

David Fleetham / Minute / Dwarf filefish (Rudarius minutus) just over an inch long as an adult, Celebes Sea, Mabul Island, Malaysia.

David Fleetham / Harlequin / Clown / Many spotted sweetlips fish (Plectorhinchus chaetodonoides) swims in erratic pattern mimicking spanish dancer nudibranch to deter predators, Celebes sea, Mabul Island, Malaysia.

David Fleetham / Porkfish (Anisotremus virginicus) native to the western Atlantic Ocean, in reef off Singer Island, Atlantic Ocean, Florida, USA.

David Fleetham / Ocellate swimming crab (Portunus sebae) on sandy sea floor, photographed off Singer Island, Atlantic Ocean, Florida, USA.

David Fleetham / Slender filefish (Monacanthus tuckeri) camouflaged against the coral reef, off Singer Island, Atlantic Ocean, Florida, USA.

David Fleetham / Yellow stingray (Urolophus jamaicensis) close up of tail barb against sandy sea floor, off Singer Island, Atlantic Ocean, Florida, USA.

David Fleetham / Giant marine hermit crab (Petrochirus diogenes). close up of green eyes on stalks and shell encrusted with limpets, off Singer Island, Atlantic Ocean, Florida, USA.

David Fleetham / Spotted scorpionfish (Scorpaena plumieri) one of the largest and most common of the scorpionfishes in the Atlantic and Caribbean. Camouflaged against background on sea floor, off Singer Island, Atlant...

David Fleetham / Rainbow / False mantis shrimp (Pseudosquilla ciliata) widespread in the tropical Indo-Pacific region and in both the western and eastern Atlantic Ocean, photographed off Singer Island, Atlantic Ocean,...

David Fleetham / Yellow stingray (Urolophus / Urobatus jamaicensis) with reticulated patterning, swimming over sandy sea bed off Singer Island, Atlantic Ocean, Florida, USA.

David Fleetham / Blackfin barracuda / Chevron barracuda (Sphyraena genie) with shoal behind, these fish form large schools on the seaward side of the reef, Indo Pacific, Yap, Micronesia.

Jack Dykinga / Collared peccary / Javalina (Pecari tajacu) demonstrating directional nose that it can rotate to sense potential danger, Santa Catalina Mountain foothills, Arizona, USA.

Jack Dykinga / Burrowing owl (Athene cunicularia) chick and parent perched on ground, chick begging parent for food, Marana, Arizona, USA.

Jack Dykinga / Burrowing owl (Athene cunicularia) parent and three chicks on ground. Parent feeding chick, Marana, Arizona, USA.

Jack Dykinga / Burrowing owl (Athene cunicularia) parent and three chicks on ground, one chick with beetle in mouth, Marana, Arizona, USA.

Jack Dykinga / Burrowing owl (Athene cunicularia) female eating chick during stressful period in the Sonoran Desert; of five chicks only one remains, Marana, Arizona, USA.

Jack Dykinga / Burrowing owl (Athene cunicularia) female and three chicks. Female with remains of her fourth chick in mouth which she has been eating, Marana, Arizona, USA.

Jack Dykinga / Crested caracara (Caracara plancus) wading in flooded field searching for prey, Marana irrigated farm fields, Marana, Arizona, USA.

Jack Dykinga / Crested caracara (Caracara plancus) in flooded field with pack rat in its mouth, The Caracara delivers a spine severing bite killing its prey instantly, Marana irrigated farm fields, Marana, Arizona,...

Jack Dykinga / Crested caracara (Caracara plancus) in flooded field with a pack rat in its mouth, crouched ready to fly, Marana irrigated farm fields, Marana, Arizona, USA.

Jack Dykinga / Crested caracara (Caracara plancus) taking off from flooded field with pack rat in beak, Marana irrigated farm fields, Marana, Arizona, USA.

Jack Dykinga / Burrowing owl (Athene cunicularia) female perched on telephone line against a large super-moon at moonrise, Marana irrigated farm fields, Marana, Arizona, USA.

Yashpal Rathore / Bharal / Blue sheep (Pseudois nayaur) male and female, Himalaya Mountains, Kibber Wildlife Sanctuary, India. March.

Yashpal Rathore / Bharal / Blue sheep (Pseudois nayaur) males walking in search of food, Himalaya Mountains, Kibber Wildlife Sanctuary, India. March.

Yashpal Rathore / Bharal / Blue sheep (Pseudois nayaur), dominant male in his mountain habitat, Himalaya Mountains, Kibber Wildlife Sanctuary, India, April.

Yashpal Rathore / Himalayan ibex (Capra sibirica hemalayanus) resting on cliff side. They live at elevations of 3800m and higher, western Himalaya mountains, Kibber Wildlife Sanctuary, India. April.

Yashpal Rathore / Himalayan ibex (Capra sibirica hemalayanus) males, resting and grazing. They live at elevations of 3800m and higher, western Himalaya mountains, Kibber Wildlife Sanctuary, India. April.

Yashpal Rathore / Himalayan ibex (Capra sibirica hemalayanus) males, resting and grazing. They live at elevations of 3800m and higher, western Himalaya mountains, Kibber Wildlife Sanctuary, India. April.

Yashpal Rathore / Himalayan ibex (Capra sibirica hemalayanus) female. They live at elevations of 3800m and higher, western Himalaya mountains, Kibber Wildlife Sanctuary, India. April.

Yashpal Rathore / Himalayan ibex (Capra sibirica hemalayanus) male with young. They live at elevations of 3800m and higher, western Himalaya mountains, Kibber Wildlife Sanctuary, India. April.

Yashpal Rathore / Himalayan ibex (Capra sibirica hemalayanus) male. They live at elevations of 3800m and higher, western Himalaya mountains, Kibber Wildlife Sanctuary, India. April.

Yashpal Rathore / Three Himalayan ibex (Capra sibirica hemalayanus) males resting. They live at elevations of 3800m and higher, western Himalaya mountains, Kibber Wildlife Sanctuary, India. April.

Yashpal Rathore / Himalayan ibex (Capra sibirica hemalayanus) male resting. They live at elevations of 3800m and higher, western Himalaya mountains, Kibber Wildlife Sanctuary, India. April.

Yashpal Rathore / Himalayan ibex (Capra sibirica hemalayanus) female; tThey live at elevations of 3800m and higher, western Himalaya mountains, Kibber Wildlife Sanctuary, India. April.

Yashpal Rathore / Snow leopard (Panthera uncia) mother and her sub-adult cub climbing up steep mountainside covered in thick snow, Kibber Wildlife Sanctuary, India. March.

Yashpal Rathore / Snow leopard (Panthera uncia) mother and her sub-adult cub climbing up steep mountainside covered in thick snow, Kibber Wildlife Sanctuary, India. March.

Yashpal Rathore / Himalayan ibex (Capra sibirica hemalayanus) young male standing in snow-covered mountainside. They live at elevations of 3800m and higher, western Himalaya mountains, Kibber Wildlife Sanctuary, India....

Yashpal Rathore / Snow leopard (Panthera uncia) male walking down snow-covered mountainside, Kibber Wildlife Sanctuary, India. March.

Yashpal Rathore / Snow leopard (Panthera uncia) male watching prey from a steep cliff, Kibber Wildlife Sanctuary, India. April.

Yashpal Rathore / Snow leopard (Panthera uncia) mother and her sub-adult cub resting on a mountainside, Kibber Wildlife Sanctuary, India. March.

Yashpal Rathore / Snow leopard (Panthera uncia) mother and her sub-adult cub resting on a mountainside, Kibber Wildlife Sanctuary, India. March.

Yashpal Rathore / Snow leopard (Panthera uncia) resting on a mountainside, Kibber Wildlife Sanctuary, India. March.

Yashpal Rathore / Bharal / Blue sheep (Pseudois nayaur), dominant male resting with female in the background, higher Himalaya mountains, Kibber Wildlife Sanctuary, India. March.

Yashpal Rathore / Bharal / Blue sheep (Pseudois nayaur), dominant male resting with another male in the foreground, higher Himalaya mountains, Kibber Wildlife Sanctuary, India. March.

Yashpal Rathore / Bharal / Blue sheep (Pseudois nayaur), dominant male resting, higher Himalaya mountains, Kibber Wildlife Sanctuary, India. March.

Yashpal Rathore / Bharal / Blue sheep (Pseudois nayaur), male resting, higher Himalaya mountains, Kibber Wildlife Sanctuary, India. March.

Yashpal Rathore / Bharal / Blue sheep (Pseudois nayaur) herd standing on a rocky slope, higher Himalaya mountains, Kibber Wildlife Sanctuary, India. March.

Oscar Dewhurst / Shelduck (Tadorna tadorna) landing on water. Gloucestershire, England, UK. March

Oscar Dewhurst / Shelduck (Tadorna tadorna) landing on water. Gloucestershire, England, UK. March

Oscar Dewhurst / Tufted duck (Aythya fuligula) male swimming. Gloucestershire, England, UK. March

Oscar Dewhurst / Northern pintail (Anas acuta) pair in flight. Gloucestershire, England, UK. March

Oscar Dewhurst / Eurasian teal (Anas crecca) male flapping its wings. Gloucestershire, England, UK. March

Oscar Dewhurst / Black-headed gull (Chroicocephalus ridibundus) pair courting. Gloucestershire, England, UK. March

Oscar Dewhurst / Rook (Corvus frugilegus) standing on short grass. Gloucestershire, England, UK. March

Oscar Dewhurst / Rook (Corvus frugilegus) standing on short grass. Gloucestershire, England, UK. March