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Sandwich Terns (Sterna sandivicensis), in their breeding colony in June, on Brownsea Island, a nature reserve in Poole Harbour, Dorset, England, United Kingdom, Europe

Palm plantation colonized by invasive Sodom apple plant (Calotropis procera), Sharaan Nature Reserve, AlUla, Medina Province, Saudi Arabia

Long-tailed Silky-flycatcher (Ptiliogonys caudatus) feeding on Twoleaf nightshade berries, Costa Rica

Adult female upland goose (Chloephaga picta) with goslings on Carcass Island in the Falkland Islands

Towering bamboo trees forming a natural canopy in the Arashiyama Bamboo Forest, Kyoto, Honshu, Japan

Sea star stranded by the low tide in Jackson Pass Provincial Marine Park, British Columbia, Canada, North America

Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize

Nurse shark (Ginglymostoma cirratum), with boat in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

West Indian manatee (Trichechus manatus), with sharksucker, Caye Caulker, inside the Mesoamerican Barrier Reef, Belize

Caribbean spiny lobster (Panulirus argus), underwater at Half Moon Caye, UNESCO, Mesoamerican Barrier Reef, Belize

A myriad of fish and coral underwater at Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

Northern (Steller) sea lions, (Eumetopias jubatus), hauled out on South Marble Island, Glacier Bay National Park, Alaska, United States of America

Northern (Steller) sea lions, (Eumetopias jubatus), hauled out on South Marble Island, Glacier Bay National Park, Alaska, United States of America

African forest elephant (Loxodonta cyclotis), Dzanga Bai, Dzanga Sangha National Park, UNESCO, Central African Republic

Locals in a canoe on the Sangha river, Dzanga Sangha National Park, UNESCO, Central African Republic

Adult snowshoe hare (Lepus americanus dalli) in Denali National Park, Alaska, United States of America

Adult Arctic ground squirrel (Spermophilus parryii) foraging in Denali National Park, Alaska, United States of America

Adult male spruce (Franklin's) grouse (Falcipennis canadensis) near Brooks River, Katmai National Park, Alaska, United States of America

Adult brown bears (Ursus arctos) foraging for salmon at the Brooks River, Katmai National Park, Alaska, United States of America

Adult brown bear (Ursus arctos) foraging for salmon at the Brooks River, Katmai National Park, Alaska, United States of America

Adult brown bear (Ursus arctos) foraging for salmon at the Brooks River, Katmai National Park, Alaska, United States of America

View from Park Service platform where adult brown bears (Ursus arctos) forage for salmon, Katmai National Park, Alaska, United States of America

Adult black-legged kittiwakes (Rissa tridactyla) in flight in the Svalbard Archipelago, Barents Sea, Norway

Adult polar bear (Ursus maritimus) in Holmabukta on the northwest coast of Spitsbergen in the Svalbard Archipelago, Norway

Tamarix aphylla wood at the edge of the palm grove of Zagora, Draa River valley, Province of Zagora, Region Draa-Tafilalet, Morocco

Adult bald eagle (Haliaeetus leucocephalus) on iceberg near Johns Hopkins Glacier, Southeast Alaska, United States of America, North America

The endemic Opuntia cactus (Opuntia echios) cactus growing in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Adult rockhopper penguin (Eudyptes chrysocome chrysocome) at breeding and molting colony on New Island, Falkland Islands

A view of Tarr Inlet in Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Southeast Alaska, United States of America, North America

Blue-footed booby (Sula nebouxii) courtship behavior in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Olive ridley turtle hatchling, Lepidochelys olivacea, Costa do Sauipe, Bahia, Brazil (South Atlantic)

Crab preying on dead portuguese man-of-war, Physalia physalis, Praia do Forte, Bahia, Brazil (South Atlantic)

Parrotfish sleeping, Sparisoma sp., head detail, Ponta da Sapata, Fernando de Noronha national marine sanctuary, Pernambuco, Brazil (S. Atlantic)

Olive ridley turtle hatchling, Lepidochelys olivacea, Costa do Sauipe, Bahia, Brazil (South Atlantic)

Painted frogfish, Antennarius pictus, white phase, Sabang wreck, Puerto Galera, Mindoro, Philippines.

Electric eel, Electrophorus electricus; this air-breathing freshwater fish can deliver an electric shock up to 650 volts and naturally occurs in the Amazon river basins of South America including Brazil and Guyanas; photo taken in captivity.

Feather star on sea fan, and scalefin anthias, Pseudanthias squamipinnis, Kilima steps, Puerto Galera, Mindoro, Philippines.

Nudibranch, Jorunna funebris, feeding on blue sponge, Haliclona sp., Monkey beach, Puerto Galera, Mindoro, Philippines.

Stripe-leg spiny lobster, Panulirus femoristriga, eye and rostrum detail, Short drop-off, Palau, Micronesia.

Pink anemonefish, Amphiprion perideraion, in sea anemone, Great barrier reef marine park, Australia (South Pacific).

Snowflake moray eel, Echidna nebulosa, scavenging in seagrass beds, Dumaguete, Negros, Philippines, Visayan sea.

Starry night octopus, Octopus luteus, foraging on coral reef at night, Malapascua, Cebu, Philippines, Visayan Sea.

Common lionfish, Pterois volitans, blends in with a variety of soft corals and sponges, Cars, Dumaguete, Negros Island, Philippines.

Juvenile striped catfish, Plotosus lineatus, schooling and feeding on sandy bottom, Puerto Galera, Mindoro, Philippines.

Thousands of scalefin anthias, Pseudanthias squamipinnis, hover over corals and barrel sponge, Puerto Galera, Mindoro, Philippines.

Short-tailed pipefish, Trachyrhamphus bicoarctatus, Masaplod, Dumaguete, Negros Island, Philippines..

Family of false clown anemone fish, Amphiprion ocellaris, seeking refuge in sea anemone, Dumaguete, Negros Island, Philippines.

Thorny oyster, Spondylus varius, resting on coral reef at night, Dumaguete, Negros Island, Philippines.

Emperor shrimp, Periclimenes imperator, next to gills of spanish dancer, Hexabranchus sanguineus, night, Puerto Galera, Mindoro, Philippines.

Family of false clown anemone fish, Amphiprion ocellaris, seeking refuge in sea anemone, Masaplod, Dumaguete, Negros Island, Philippines.

Over under image of coral reef, Acropora spp., and trees at Majikin Island, Namu atoll, Marshall Islands (N. Pacific).

Pair of wire coral gobies, Bryaninops yongei, on wire coral, Cirripathes anguina,Ailuk atoll, Marshall Islands, Pacific

Juvenile and adult pink anemonefish in sea anemone, Amphiprion perideraion, Fila Reef, Port Vila, Vanuatu (S. Pacific).

Over under image of coral reef, Acropora spp., and trees at Majikin Island, Namu atoll, Marshall Islands (N. Pacific).

Orange-finned anemonefish, Amphiprion chrysopterus, and Merten's sea anemone, Stichodactyla mertensii, Namu atoll, Marshall Islands (N. Pacific).

Beaked Whale stranded on coral reef during low tide, Mesoplodon sp., Mili, Marshall Islands (N. Pacific)..

Split image of Smallspotted dart, Trachinotus baillonii, swimming along the sandy shore at dusk, Rongelap, Marshall Islands, Micronesia