Juvenile loggerhead turtle (Caretta caretta), oceanic stage, below surface in deep water, Northeast Atlantic, offshore Morocco, North Africa, Africa

Juvenile loggerhead turtle (Caretta caretta), oceanic stage, breathing at the surface, Northeast Atlantic, offshore Morocco, North Africa, Africa

Girl snorkeling in The Maldives, Indian Ocean, Asia

Great white shark (Carcharodon carcharias) at the surface at Kleinbaai in the Western Cape, South Africa, Africa

Great white shark (Carcharodon carcharias) at the surface at Kleinbaai in the Western Cape, South Africa, Africa

Great white shark (Carcharodon carcharias) at the surface at Kleinbaai in the Western Cape, South Africa, Africa

A shoal of fish, Galapagos Islands, Ecuador, South America

Elegant lichens, Orange Sea Lichen, Caloplaca marina, covering the surface of a small islet in the Beagle Channel, Ushuaia, Argentina, South America

Resident killer whale, Orcinus orca, Cattle Pass, San Juan Island, Washington, United States of America, North America

Resident killer whale, Orcinus orca, Cattle Pass, San Juan Island, Washington, United States of America, North America

Resident killer whale bull, Orcinus orca, Cattle Pass, San Juan Island, Washington, United States of America, North America

A nurse shark (Ginglymostoma cirratum) pictured with a school of juvenile jacks. Bahamas, Central America

Green sea turtle (Chelonia mydas) underwater, Maui, Hawaii, United States of America, Pacific

Sohal surgeonfish (Acanthurus sohal) in shallow water, low angle view, Ras Mohammed National Park, Red Sea, Egypt, North Africa, Africa

Franciscan Monastery, Lopud Island, Elaphiti Islands (Elaphites), Dalmatian Coast, Adriatic Sea, Croatia, Europe

Franciscan Monastery, Lopud Island, Elaphiti Islands (Elaphites), Dalmatian Coast, Adriatic Sea, Croatia, Europe

Ermoupoli (Khora), Syros Island, Cyclades, Greek Islands, Greece, Europe

Groynes and incoming tide at Bridlington, East Riding of Yorkshire, England, United Kingdom, Europe

Golden late afternoon sunshine lights up the rocks and cliffs at Kimmeridge Bay, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Bembridge lifeboat pier at sunrise, Isle of Wight, England, United Kingdom, Europe

Beachside at Rhossili Bay with the wreck of the Helvetia buried in the sand, and Worm's Head on the horizon, Gower Peninsula, near Swansea, Wales, United Kingdom, Europe

Layered cliffs of Dunraven Bay glowing gold in the late evening sunlight, Southerndown, Wales, United Kingdom, Europe

Waterfront restaurant in the evening, Port de Pollenca (Puerto Pollensa), Mallorca (Majorca), Balearic Islands, Spain, Mediterranean, Europe

A spectacular sunset over the English Channel near Old Harry Rocks, Dorset, England, United Kingdom, Europe

Spectacular sunrise on the coast near Bamburgh Castle, Northumberland, England, United Kingdom, Europe

Spectacular sunrise over Bamburgh Castle, Northumberland, England, United Kingdom, Europe

The sun sets over Gad Cliff and Hobarrow Bay, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Sunset over Chesil Beach at Fortuneswell, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Smalls boat in Poole Harbour at dawn, Dorset, England, United Kingdom, Europe

Boulders and reflections in the sea at sunrise, Saltwick Bay, Yorkshire, England, United Kingdom, Europe

Humpback whale dives into the depths of Paradise Harbour, Antarctic Peninsula, Antarctica, Polar Regions

Mountains and icebergs on the Antarctic Peninsula, Antarctica, Polar Regions

Bavaro Beach at sunrise, Punta Cana, Dominican Republic, West Indies, Caribbean, Central America

Looking across the frozen sea of Ullsfjord from Sjursnes, towards the Southern Lyngen Alps, at sunset, Troms, Norway, Scandinavia, Europe

Sandy shores of Sandymouth beach at low tide, Cornwall, England, United Kingdom, Europe

Rockpools on sandy Coombesgate Beach at low tide, Woolacombe, Devon, England, United Kingdom, Europe

Rockpools and jagged rocks at Duckpool beach in North Cornwall, England, United Kingdom, Europe

Old Harry Rocks at sunrise, Studland, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Basking shark (Cetorhinus maximus) feeding on plankton, Inner Hebrides, Scotland, United Kingdom, Europe

Teignmouth Pier and coastal defences at Teignmouth, South Devon, England, United Kingdom, Europe

British Spearfishing Championships, Thurlestone. Devon, England, United Kingdom, Europe

British Spearfishing Championships, Thurlestone. Devon, England, United Kingdom, Europe

Snorkellers with an oceanic manta ray (Manta birostris) feeding near the surface, Honda Bay, Palawan, The Philippines, Southeast Asia, Asia

Oceanic manta ray (Manta birostris) feeding near the surface, Honda Bay, Palawan, The Philippines, Southeast Asia, Asia

Sunbeams filtering through Water Surface, Caribbean Sea, Dominica

Fort Lovrijenac (St. Lawrence Fortress) at sunrise, Dubrovnik, Dalmatian Coast, Adriatic, Croatia, Europe

The tail of a humpback whale (Megaptera novaeangliae), off the coast of Lanai, Hawaii, United States of America, Pacific, North America

Ancient oak trees beside a New Forest pond, Hampshire, England, United Kingdom, Europe

A sperm whale (Physeter macrocephalus), slapping the water with its tail fluke, Sri Lanka, Indian Ocean, Asia

A humpback whale (Megaptera novaeangliae), slaps the surface of the water with its tail, United States of America, Pacific, North America

Oceanic manta ray (Manta birostris) feeding near the surface, Honda Bay, Palawan, The Philippines, Southeast Asia, Asia

Sunbeams filtering through Water Surface, Caribbean Sea, Dominica

Humpback whale (Megaptera novaeangliae), underwater, Hawaii, United States of America, Pacific, North America

A green sea turtle (Chelonia mydas) makes its way to the surface off Maui, Hawaii, United States of America, Pacific, North America

Boulders and reflections in the sea at sunrise, Saltwick Bay, Yorkshire, England, United Kingdom, Europe

British Spearfishing Championships, Thurlestone, Devon, England, United Kingdom, Europe

Sunbeams filtering through Water Surface, Caribbean Sea, Dominica

Sunbeams filtering through Water Surface, Caribbean Sea, Dominica

Sunbeams filtering through Water Surface, Caribbean Sea, Dominica

A humpback whale (Megaptera novaeangliae), tail slapping the surface of the Pacific Ocean off Hawaii, United States of America, Pacific, North America

Resident killer whale bull, Orcinus orca, Cattle Pass, San Juan Island, Washington, United States of America, North America

Sea otter (Enhydra lutris) on its back, Homer, Alaska, United States of America, North America

Sea lions moving together in sea, Great Bear Rainforest, British Columbia, Canada, North America

Bubble ring, Bahamas, West Indies, Central America

Icebergs and mountains of the Antarctic Peninsula, Antarctica, Polar Regions

Snorkeller with oceanic manta ray (Manta birostris) feeding near the surface, Honda Bay, Palawan, The Philippines, Southeast Asia, Asia

Icebergs and mountains of the Antarctic Peninsula, Antarctica, Polar Regions

The critically endangered hawksbill turtle (Eretmochelys imbricata), Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Stone jetty on Sidmouth beachfront at sunrise, Sidmouth, Devon, England, United Kingdom, Europe

Teignmouth Pier at dawn, Devon, England, United Kingdom, Europe

Diver doing Safety Stop, Kai Islands, Moluccas, Indonesia

Whale shark (Rhincodon typus) swimming beneath the surface in Honda Bay, Palawan, The Philippines, Southeast Asia, Asia

Humpback whale (Megaptera novaeangliae), underwater off the coast of Hawaii, United States of America, Pacific, North America

Resident killer whale, Orcinus orca, Cattle Pass, San Juan Island, Washington, United States of America, North America

Coral reef scene close to the ocean surface, Ras Mohammed National Park, off Sharm el Sheikh, Sinai Red Sea, Egypt, North Africa, Africa

Oceanic manta ray (Manta birostris) feeding near the surface, Honda Bay, Palawan, The Philippines, Southeast Asia, Asia

Resident killer whale, Orcinus orca, spy-hopping in Cattle Pass, San Juan Island, Washington, United States of America, North America

Sunbeams filtering through Water Surface, Caribbean Sea, Dominica

Sunbeams filtering through Water Surface, Caribbean Sea, Dominica

Great white shark (Carcharodon carcharias) at the surface at Kleinbaai in the Western Cape, South Africa, Africa

Franciscan Monastery, Lopud Island, Elaphiti Islands (Elaphites), Dalmatian Coast, Adriatic Sea, Croatia, Europe

Underwater view of a scuba diver entering the water, Ras Mohammed National Park, Red Sea, Egypt, North Africa, Africa

Oceanic manta ray (Manta birostris) feeding near the surface, Honda Bay, Palawan, The Philippines, Southeast Asia, Asia

Oceanic manta ray (Manta birostris) feeding near the surface, Honda Bay, Palawan, The Philippines, Southeast Asia, Asia

Adult polar bear (Ursus maritimus) on the ice in Bear Sound, Spitsbergen Island, Svalbard, Norway, Scandinavia, Europe

Sculpture of a man made of letters at the Lido Mar swimming pool at the newly developed Marina in Porto Montenegro, Montenegro, Europe

Whale shark (Rhincodon typus) with shoal of fish on the surface), Honda Bay, Palawan, The Philippines, Southeast Asia, Asia

Adult polar bear (Ursus maritimus) on the ice in Bear Sound, Spitsbergen Island, Svalbard, Norway, Scandinavia, Europe

View to Surface from Underwater, Baja California, Mexico

Sun star at sunrise in Korcula Town, Korcula Island, Dalmatian Coast, Adriatic, Croatia, Europe

Fort Lovrijenac (St. Lawrence Fortress) at sunrise, Dubrovnik, Dalmatian Coast, Adriatic, Croatia, Europe

Sea lions in Great Bear Rainforest, British Columbia, Canada, North America

Blue shark (Prionace glauca) in the Azores, Portugal, Atlantic, Europe

Sunbeams in Ocean, Mary Island, Solomon Islands

Water taxi crosses the River Looe in Looe, Cornwall, England, United Kingdom, Europe

Breaking Waves, Indian Ocean, Wild Coast, South Africa

Silhouette of two scuba divers at the surface, Red Sea, Egypt, North Africa, Africa

Resident killer whale, Orcinus orca, Cattle Pass, San Juan Island, Washington, United States of America, North America

Northern minke whale, Balaenoptera acutorostrata, surfacing in Cattle Pass, San Juan Islands, Washington, United States of America, North America

Sunbeams in Ocean, Mary Island, Solomon Islands