Ralph Pace / Green Sea Turtle (Chelonia mydas), San Diego, California

ZSSD / Indian Rhinoceros (Rhinoceros unicornis) male calf, San Diego Zoo Safari Park, California

Richard Herrmann / Smooth Hammerhead Shark (Sphyrna zygaena), Nine Mile Bank, San Diego, California

Richard Herrmann / Yellowfin Tuna (Thunnus albacares) and Blue Marlin (Makaira nigricans) beside floating kelp, Nine Mile Bank, San Diego, California

Richard Herrmann / Pacific White-sided Dolphin (Lagenorhynchus obliquidens) pod, Nine Mile Bank, San Diego, California

Winfried Wisniewski / Brown Pelican (Pelecanus occidentalis) landing, San Diego, California

Richard Herrmann / Blue Shark (Prionace glauca), San Diego, California

Richard Herrmann / California Yellowtail (Seriola lalandi) pair, San Diego, California

ZSSD / Queensland Koala (Phascolarctos cinereus adustus) in eucalyptus tree, native to Queensland

ZSSD / Bonobo (Pan paniscus) female playing with youngster by throwing him up in the air, native to Africa

ZSSD / Western Lowland Gorilla (Gorilla gorilla gorilla) scratching its head, native to Africa

ZSSD / Eclectus Parrot (Eclectus roratus) male, native to Australia and southeast Asia

ZSSD / Eurasian Lynx (Lynx lynx), native to Europe

ZSSD / Blue Poison Dart Frog (Dendrobates azureus) very tiny poisonous frog, Indian tribes use poison for arrows, native to South America, San Diego Zoo, California

ZSSD / Bighorn Sheep (Ovis canadensis) male, native to North America, San Diego Zoo Safari Park, California

ZSSD / Giant Panda (Ailuropoda melanoleuca) cub in tree, endangered, native to China

ZSSD / Andean Cock-of-the-rock (Rupicola peruvianus) portrait, native to Andean cloud forests

ZSSD / Scarlet Macaw (Ara macao) pair kissing, native to South America

ZSSD / Rothschild Giraffe (Giraffa camelopardalis rothschildi) mother kissing calf, native to Africa

ZSSD / Rothschild Giraffe (Giraffa camelopardalis rothschildi) mother nuzzling calf, native to Africa

ZSSD / Giant Panda (Ailuropoda melanoleuca) named Mei Sheng on exhibit, native to Asia

Flip Nicklin / Orca (Orcinus orca) at water's surface with open mouth, Sea World, California

Norbert Wu / Fangtooth (Anoplogaster cornuta) has bony, hard body, unlike most deep sea fish, San Diego, California

Norbert Wu / Big-mouth Gulper (Eurypharynx pelecanoides) deep sea species with hinged mouth swings wide open to accommodate large prey, San Diego, California

Norbert Wu / Blue Shark (Prionace glauca), San Diego, California

Karl Ammann / Bonobo mother and baby {Pan paniscus} San Diego Zoo, CA, USA

Juan Carlos Munoz / Sunset over Pacific Ocean. La Jolla, San Diego, California, USA.

Juan Carlos Munoz / Pacific Ocean at sunset. La Jolla, San Diego, California, USA.

Juan Carlos Munoz / Brown pelican (Pelecanus occidentalis). La Jolla, San Diego, California, USA. February.

Juan Carlos Munoz / Brown pelican (Pelecanus occidentalis)in flight over coast. La Jolla, San Diego, California, USA. February.

Ralph Pace / Swordfish (Xiphias gladius) with tags to determine effectiveness of fishing gear, San Diego, California

Ralph Pace / Swordfish (Xiphias gladius) with tags to determine effectiveness of fishing gear, San Diego, California

Ralph Pace / Green Sea Turtle (Chelonia mydas), San Diego, California

Ralph Pace / Halfmoon (Medialuna californiensis) school under kelp paddy, San Diego, California

Ralph Pace / Halfmoon (Medialuna californiensis) school under kelp paddy, San Diego, California

Ralph Pace / Spotted Seven-gilled Shark (Notorynchus cepedianus), San Diego, California

Ralph Pace / Blue Shark (Prionace glauca), San Diego, California

Ralph Pace / Green Sea Turtle (Chelonia mydas), San Diego, California

Ralph Pace / California Sea Lion (Zalophus californianus) feeding on Ocean Sunfish (Mola mola), San Diego, California

Ralph Pace / Harbor Seal (Phoca vitulina) in kelp forest, San Diego, California

Ralph Pace / Spotted Seven-gilled Shark (Notorynchus cepedianus) in kelp forest, San Diego, California

Ralph Pace / Loggerhead Sea Turtle (Caretta caretta) juvenile, San Diego, California

Ralph Pace / Ocean Sunfish (Mola mola), San Diego, California

Ralph Pace / Blue Shark (Prionace glauca), San Diego, California

Ralph Pace / California Sheephead (Semicossyphus pulcher) female in kelp forest, San Diego, California

Ralph Pace / Opah (Lampris guttatus), San Diego, California

Ralph Pace / Green Sea Turtle (Chelonia mydas) resting near ocean floor, San Diego, California

Ralph Pace / Green Sea Turtle (Chelonia mydas) feeding on seaweed, San Diego, California

Ralph Pace / Green Sea Turtle (Chelonia mydas) pair, San Diego, California

Ralph Pace / Green Sea Turtle (Chelonia mydas) feeding on seaweed, San Diego, California

Ralph Pace / Green Sea Turtle (Chelonia mydas) surfacing, San Diego, California

Ralph Pace / Green Sea Turtle (Chelonia mydas), San Diego, California

Ralph Pace / Green Sea Turtle (Chelonia mydas) feeding on seaweed, San Diego, California

Ralph Pace / Green Sea Turtle (Chelonia mydas), San Diego, California

Ralph Pace / Blue Shark (Prionace glauca), San Diego, California

Richard Herrmann / Pacific White-sided Dolphin (Lagenorhynchus obliquidens) surfacing, Mission Beach, San Diego, California

Richard Herrmann / Pacific White-sided Dolphin (Lagenorhynchus obliquidens) surfacing, Mission Beach, San Diego, California

Richard Herrmann / Pacific White-sided Dolphin (Lagenorhynchus obliquidens) pair hunting Northern Anchovy (Engraulis mordax), Nine Mile Bank, San Diego, California

Richard Herrmann / Pacific White-sided Dolphin (Lagenorhynchus obliquidens) pair hunting Northern Anchovy (Engraulis mordax), Nine Mile Bank, San Diego, California

Jack Dykinga / Herring gulls (Larus argentatus) squabbling over clams. The birds drop the clams from height to open them, but this can allow another bird to steal it. Coronado Island, San Diego, California. USA, May...

Jack Dykinga / Herring gulls (Larus argentatus) squabbling over clams. The birds drop the clams from height to open them, but this can allow another bird to steal it. Coronado Island, San Diego, California. USA, May...

Jack Dykinga / Herring gulls (Larus argentatus) squabbling over clams. The birds drop the clams from height to open them, but this can allow another bird to steal it. Coronado Island, San Diego, California. USA, May...

Jack Dykinga / Herring gulls (Larus argentatus) squabbling over clams. The birds drop the clams from height to open them, but this can allow another bird to steal it. Coronado Island, San Diego, California. USA, May...

Richard Herrmann / Spotted Seven-gilled Shark (Notorynchus cepedianus), La Jolla, San Diego, California

Richard Herrmann / Pelagic Red Crab (Pleuroncodes planipes) group, benthic stage, La Jolla, San Diego, California

Richard Herrmann / Common Dolphin (Delphinus delphis) feeding on Pacific Sardine (Sardinops sagax), Nine Mile Bank, San Diego, California

Richard Herrmann / Pacific Bluefin Tuna (Thunnus orientalis) hunting Northern Anchovy (Engraulis mordax), Nine Mile Bank, San Diego, California

Richard Herrmann / Pacific Bluefin Tuna (Thunnus orientalis) hunting Northern Anchovy (Engraulis mordax), Nine Mile Bank, San Diego, California

Richard Herrmann / Pacific Bluefin Tuna (Thunnus orientalis) hunting Northern Anchovy (Engraulis mordax), Nine Mile Bank, San Diego, California

Benjamin Olson / Anna's Hummingbird (Calypte anna) male, San Diego, California

Ralph Pace / Opah (Lampris guttatus), San Diego, California

Richard Herrmann / Shortfin Mako (Isurus oxyrhynchus), Nine Mile Bank, San Diego, California

ZSSD / Jaguar (Panthera onca) female licking brain-shaped ice enrichment, San Diego Zoo

Chris Mattison / Cumberland rock-shield lichen (Xanthoparmelia cumberlandia) with numerous apothecia. San Diego, California, May.

Richard Herrmann / Shortfin Mako (Isurus oxyrhynchus), La Jolla, San Diego, California

Doc White / Arctic Grey wolf (Canis lupus linnaeus) curled up asleep, Calfiornia Wolf Centre, San Diego County, California, USA, captive

Doug Perrine / Elegant tern (Thalasseus elegans) flying overhead, off San Diego, Southern California, USA, June

Tim Fitzharris / Intertidal zone at low tide at sunset, La Jolla Cove, San Diego, California

Tim Fitzharris / Kelp along intertidal zone at low tide at sunset, La Jolla Cove, San Diego, California

Doc White / Arctic grey wolf (Canis llupus linnaeus) California Wolf Centre, Captive, San Diego County, California, USA, October.

Doc White / Arctic grey wolf (Canis llupus linnaeus) California Wolf Centre, Captive, San Diego County, California, USA, October.

Richard Herrmann / Splitnose Rockfish (Sebastes diploproa) young using drifting Giant Kelp (Macrocystis pyrifera) as shelter, San Diego, California

Richard Herrmann / Pacific White-sided Dolphin (Lagenorhynchus obliquidens) investigating floating Giant Kelp (Macrocystis pyrifera) with school of juvenile fish, open ocean off San Diego, California

ZSSD / Polar Bear (Ursus maritimus) underwater, San Diego Zoo, California

ZSSD / White Rhinoceros (Ceratotherium simum) calf with mother, San Diego Zoo Safari Park, California

ZSSD / East African River Hippopotamus (Hippopotamus amphibius kiboko) in defensive posture, San Diego Zoo, California

ZSSD / Cheetah (Acinonyx jubatus) cub, San Diego Zoo Safari Park, California

ZSSD / Sumatran Tiger (Panthera tigris sumatrae) cub, San Diego Zoo Safari Park, California

ZSSD / Cheetah (Acinonyx jubatus) cub, San Diego Zoo Safari Park, California

ZSSD / White Rhinoceros (Ceratotherium simum) calf, San Diego Zoo Safari Park, California

ZSSD / Sumatran Tiger (Panthera tigris sumatrae) cub, San Diego Zoo Safari Park, California

ZSSD / Sumatran Tiger (Panthera tigris sumatrae) cub, San Diego Zoo Safari Park, California

ZSSD / Sun Bear (Helarctos malayanus) yawning, San Diego Zoo, California

ZSSD / Snow Leopard (Panthera uncia), San Diego Zoo, California

ZSSD / White Rhinoceros (Ceratotherium simum) calf with mother, San Diego Zoo Safari Park, California

ZSSD / Bonobo (Pan paniscus) female, San Diego Zoo, California