990-162 - A friendly Minke whale (Balaenoptera acutorostrata) has rolled onto its right side to take a better look at the excited people on the boat. Note that the left eye is open. St. Lawrence estuary, Canada

990-163 - She canÃŒt be more trusting than that. A curious Minke whale (Balaenoptera acutorostrata) has turned upside down exposing her white belly, navel and genital slits to the photographer. St. Lawrence estuary, Canada

832-161770 - Alley of the Baobabs (Adansonia grandidieri), Morondava, Madagascar, Africa

785-1608 - Reflection of houses in a still canal in the Dorsoduro area, Venice, UNESCO World Heritage Site, Veneto, Italy, Europe

785-1606 - Reflection of San Trovaso church in a still canal in the Dorsoduro area, Venice, UNESCO World Heritage Site, Veneto, Italy, Europe

785-1607 - Reflection of San Trovaso church in a still canal in the Dorsoduro area, Venice, UNESCO World Heritage Site, Veneto, Italy, Europe

832-134539 - Baobab-Alley, Grandidier's Baobab (Adansonia grandidieri), in the morning light, Morondava, Madagascar, Africa

832-134543 - Intertwined Baobabs (Adansonia grandidieri), Morondava, Madagascar, Africa

832-137562 - Barth's Olympia Looping, looping roller coaster at the Oktoberfest Munich, Theresienwiese, Munich, Bavaria, Germany, Europe

832-134533 - Grandidier's Baobab (Adansonia grandidieri), silhouette of trees at dawn, Morondava, Madagascar, Africa

832-134536 - Baobab Alley, Grandidier's Baobab (Adansonia grandidieri), during magic hour, Morondava, Madagascar, Africa

832-134528 - Baobab alley (Adansonia grandidieri), in the evening light, Morondava, Madagascar, Africa

832-134534 - Baobab Alley, Grandidier's Baobab (Adansonia grandidieri), during magic hour, Morondava, Madagascar, Africa

832-132109 - Boats on the shore of the Lake Chiemsee with view to Mt. Hochgern, Lake Chiemsee, Chiemgau, Upper Bavaria, Bavaria, Germany, Europe

832-134519 - Baobab alley (Adansonia grandidieri), in the evening light, Morondava, Madagascar, Africa

832-134531 - Baobab Alley, Grandidier's Baobab (Adansonia grandidieri), shortly before sunrise, silhouette of trees at dawn, Morondava, Madagascar, Africa

832-134537 - Baobab-Alley, Grandidier's Baobab (Adansonia grandidieri), at night with star trails, Morondava, Madagascar, Africa

832-134520 - Baobab alley (Adansonia grandidieri), in the evening light, Morondava, Madagascar, Africa

832-134541 - Group of Baobabs (Adansonia grandidieri), Morondava, Madagascar, Africa

832-134532 - Grandidier's Baobab (Adansonia grandidieri), silhouette of trees at dawn, Morondava, Madagascar, Africa

832-134535 - Baobab Alley, Grandidier's Baobab (Adansonia grandidieri), during magic hour, Morondava, Madagascar, Africa

817-424578 - Underwater view of waves

832-103400 - White-clad trapeze artists hanging upside down from a platform in the air, Global Rheingold, open-air theater by La Fura dels Baus, Duisburg-Ruhrort, Ruhrgebiet area, North Rhine-Westphalia, Germany, Europe

1109-861 - Boats at Mount Maunganui at sunset, Tauranga, North Island, New Zealand, Pacific

832-103398 - White-clad trapeze artists hanging upside down from a platform in the air, Global Rheingold, open-air theater by La Fura dels Baus, Duisburg-Ruhrort, Ruhrgebiet area, North Rhine-Westphalia, Germany, Europe

832-103397 - White-clad trapeze artists hanging upside down from a platform in the air, Global Rheingold, open-air theater by La Fura dels Baus, Duisburg-Ruhrort, Ruhrgebiet area, North Rhine-Westphalia, Germany, Europe

832-103399 - White-clad trapeze artists hanging upside down from a platform in the air, Global Rheingold, open-air theater by La Fura dels Baus, Duisburg-Ruhrort, Ruhrgebiet area, North Rhine-Westphalia, Germany, Europe

832-103401 - White-clad trapeze artists hanging upside down from a waved platform in the air, Global Rheingold, open-air theater by La Fura dels Baus, Duisburg-Ruhrort, Ruhrgebiet area, North Rhine-Westphalia, Germany, Europe

83-12649 - Pair of Brown Pelicans (Pelecanus occidentalis) dive for fish at the Nosara River mouth, Nosara, Guanacaste Province, Costa Rica, Central America

832-111193 - Street of baobab trees (Adansonia digitata) at sunset, Madagascar, Africa

832-77653 - Alley of baobab trees (Adansonia digitata) at sunset, near Morondava in western Madagascar, Africa, Indian Ocean

832-84781 - Baobab (Adansonia digitata), at dusk, Kruger National Park, South Africa, Africa

832-84780 - Quiver trees (Aloe dichotoma) with storm sky, Quiver Tree Forest, Keetmamshoop, Namibia, Africa

1001-129 - Weevil (Curculionoidea), North West Bulgaria, Europe

832-77655 - Baoba (Adansonia digitata), reputedly the oldest tree of Madagascar, Africa, Indian Ocean

1001-359 - Common green lacewing (Chrysoperla carnea), North West Bulgaria, EuropeFamily Chrysopidae;Order Neuroptera

1001-368 - True browns (Elymniini,), Trigrad, South West Bulgaria, EuropeFamily Nymphalidae;Sub family Satyrinae

832-77663 - Baobab Avenue, Baobab trees (Adansonia digitata) at sunset, Madagascar, Africa, Indian Ocean

1001-355 - Grass moth (Crambidae), North West Bulgaria, Europe

832-77656 - Baoba (Adansonia digitata) at sunset, Madagascar, Africa, Indian Ocean

1001-326 - Insecta, North West Bulgaria, EuropeOrder Hymenoptera

1001-269 - Groundbug, Rhyparochrominae, North West Bulgaria, EuropeFamily Lygaeidae

832-53625 - Baobab tree (Adansonia digitata), Tarangire National Park, Tanzania, Africa

832-47537 - African Baobab tree (baobab), baobab-alley at sunset, Madagascar, Africa

832-48236 - Baobab Alley, Baobab trees (Adansonia digitata) at sunset, near Morondava in the west of Madagascar, Africa, Indian Ocean

832-47535 - African Baobab tree (baobab), baobab-forest near Morondava on the west coast of Madagascar, Africa

832-48240 - Avenue of Baobab (Adansonia digitata) trees at sunset, near Morondava in western Madagascar, Africa, Indian Ocean

832-47539 - African Baobab tree (baobab), baobab-forest near Morondava on the west coast of Madagascar, Africa

832-44004 - Baobab or Monkey-bread Tree (Adansonia digitata), Tarangire National Park, Tanzania, Africa

1103-383 - Caribbean reef squid (Sepioteuthis sepioidea), Dominica, West Indies, Caribbean, Central America

1103-382 - Caribbean reef squid (Sepioteuthis sepioidea), Dominica, West Indies, Caribbean, Central America

1113-63547 - Alpine climber, free climbing, Dolomites, Italy

989-215 - Mallard drake (Anas platyrhynchos) upended dabbling for food in lake, Wiltshire, England, United Kingdom, Europe

989-190 - Green drake mayfly (Ephemera danica) newly emerged on a riverside umbel flowerhead in May, Wiltshire, England, United Kingdom, Europe

989-202 - Wasp orb web spider (Argiope bruennichi) with prey, near Marburg, Hesse, Germany, Europe

1113-27174 - Upside-Down Jellyfish at Surface, Cassiopea andromeda, Risong Bay, Micronesia, Palau

1116-29914 - Hawaii, Big Island, Kalapana, Black Brittle Starfish turned upside down on black sand.

1116-29008 - Netherland Antilles, Bonaire, Brittle Starfish on tube sponge.

1116-27741 - Hawaii, Oahu, Lanikai, Young couple doing yoga, stay in a headstand position on the beach.

857-75316 - A woman doing a headstand on on the upper San Juan River, Mexican Hat, Utah.

857-76864 - Women rock climber in yellow tank top hangs upside down while climbing a difficult rock climb.

857-67013 - A man performs a back flip off a cornice while skiing off-piste near St. Anton am Arleberg, Austria.

857-50107 - Windsurfer lofts a beautiful forward loop over the middle of the Columbia River Gorge.

857-50103 - Windsurfer slides a sweet table top for the viewing pleasure of a passing Columbia River Barge Captain.

857-41196 - A BASE jumper upside down after jumping off of a bridge in Twin Falls, Idaho (Wide Angle Lens).

749-1297 - Young man doing acrobatics on Rio da Vila beach, Porto Seguro, Bahia, Brazil, South America

857-36125 - A woman boulderer hangs above the beach at sunset at Houda Pt. in Northern California

857-27542 - Jaime Herraiz looks relaxed, hanging upside down as he heads into a handle pass.

166-5407 - Upturned boats, South Harbour, Utsire island, west of Karmoy, Norway, Scandinavia, Europe

1112-158 - Spider on thread, Cerro Dragon, Santa Cruz Island, Galapagos Islands, Ecuador, South America

832-29702 - Crab Spider (Misumena vatia)

1198-240 - Straw-coloured fruit bat (eidolon helvum) kasanka park, zambia, roosting.

1198-781 - Livingstones fruit bat (pteropus livingstonii) native of the comoro islands (captive bristol zoo)

1-334 - Aerobatics champion Neil Williams in Stampe, Redhill, Surrey, England, United Kingdom, Europe

1109-54 - Rowing boats and snow capped mountains at Lake Alexandrina, Southern Lakes, Otago Region, South Island, New Zealand, Pacific

930-17 - A Bottlenose Dolphin (Tursiops truncatus) breaches inverted from the Moray Firth, Scotland.

978-4 - Galapagos sea lion - Zalophus californianus wollebacki. Galapagos, Pacific Ocean

906-10 - Sperm whale (Physeter macrocephalus) preforming "head-out" behaviour, vertical in the water while socialising. This is followed by either disappearing below the surface or turning upside down. Endangered, Ionian Sea, Greece.

978-407 - Painted lady caterpillar shortly before changing to chrysalis. It hangs itself upside down in this hooked position for around 24 hours. It continues to move throughout the 24 hours in gentle changes of position. . Isle of White, UK. Isle of White, UK

978-127 - Closeup of the mildly toxic tentacles of the Upsidedown Jellyfish (Cassiopeia andromeda) which likes to inhabit shallow tropical lagoons. Red Sea.

978-5 - Galapagos sea lion - Zalophus californianus wollebacki. Galapagos, Pacific Ocean

985-23 - Blue whale (Balaenoptera musculus) lunge feeding at the surface. The whale is upside down to the visible part is the lower jaw upside down. Monterey Bay, California, USA

931-64 - Sperm whale. (Physeter macrocephalus). A sperm whale lying upside down beside a yacht . Caribbean.

934-97 - divers enjoying wreck diving in Barbados, Caribbean

931-335 - Pilot whale (globicephala macrorynchus) A baby pilot whale upside down.Gulf of California.

934-160 - Sara Campbell world Champion freediver running freediving courses in Dahab. Egypt.

934-150 - Sara Campbell world Champion freediver running freediving courses in Dahab. Egypt.

969-147 - Sperm Whale (Physeter macrocephalus) upside down underwater. Azores

969-146 - Sperm Whale (Physeter macrocephalus) upside down underwater. Azores

979-6949 - Crew and guest on Zodiacs in the Atlantic Ocean from onboard the National Geographic Endeavour crossing the Atlantic Ocean from Lisbon, Portugal to Salvador, Brazil

979-6419 - Galapagos sea lion (Zalophus wollebaeki) underwater in the Galapagos Island Group, Ecuador. Pacific Ocean.

979-6950 - Crew and guest on Zodiacs in the Atlantic Ocean from onboard the National Geographic Endeavour crossing the Atlantic Ocean from Lisbon, Portugal to Salvador, Brazil

979-6213 - The Lindblad expedition ship National Geographic Sea Lion staff diving off the sandstone cliffs at Isla San Jose, Gulf of California (Sea of Cortez), Mexico

979-6948 - Crew and guest on Zodiacs in the Atlantic Ocean from onboard the National Geographic Endeavour crossing the Atlantic Ocean from Lisbon, Portugal to Salvador, Brazil

979-72 - Young female Hawaiian spinner dolphin (Stenella longirostris) upside down while spinning in the AuAu Channel off the coast of Maui, Hawaii, USA. Pacific Ocean.

1015-197 - Cleaner shrimp on jellyfish. Indo Pacific

1015-296 - Sea Nettle jellyfish.

979-6947 - Crew and guest on Zodiacs in the Atlantic Ocean from onboard the National Geographic Endeavour crossing the Atlantic Ocean from Lisbon, Portugal to Salvador, Brazil

979-1142 - Newborn southern elephant seal (Mirounga leonina) on the beach at President Head on Snow Island in the South Shetland Island Group, Antarctica

911-877 - The Virgin train crash site at Grayrigg near Kendal, Cumbria, England, United Kingdom, Europe