Jeff Rotman / Lifting a cannon during the recovery of the shipwreck "Las Maravillas", a Spanish galleon sunk in 1658, Bahamas. 1987. Model released Model released.

Solvin Zankl / Just three hours after they hatch from the water and moult into mature adults, the male Long-tailed / Tisza mayfly (Palingenia longicauda) perish. Adult mayflies have no mouth opening and no guts. The...

Juergen Freund / Portugese man-of-war / Blue Bottle {Physalia physalis} split level showing float and tentacles, Indo-pacific

Doug Perrine / Northern / lined / Atlantic seahorse (Hippocampus erectus) male giving birth - expelling fry from pouch - young fry then float to the water's surface; captive, digitally manipulated

Norbert Wu / Goose Barnacle (Lepas sp) group filter feeding, attached to fisherman's float, North Pacific

Juergen Freund / Stingless jellyfish float in brackish water lake, Kalaban Is, Kalimantan, Indonesia

Karl Ammann / Deforestation -Timber float , Kutai river, Central Kalimantan, Borneo

Gavin Hellier / Religious float being carried through the streets during Semana Santa, Holy Week, celebrations, Malaga, Andalucia, Spain March 2010

Gavin Hellier / Religious float being carried through the streets during Semana Santa, Holy Week, celebrations, Malaga, Andalucia, Spain March 2010

Paul Williams / Giant water lily (Victoria cruziana) underside of leaf showing spines for protection against fish, and thick stems filled with air for support to float on water, Pantanal, Matogrossense National Park,...

Paul Williams / Giant water lily (Victoria cruziana) underside of leaf showing spines for protection against fish, and thick stems filled with air for support to float on water, Pantanal, Matogrossense National Park,...

Merryn Thomas / Life-saving float in case beside pedalo lake. Looe, Southeast Cornwall, UK. April 2009.

Merryn Thomas / Life-saving float in case beside pedalo lake. Looe, Southeast Cornwall, UK. April 2009.

Eric Baccega / Group of Walrus (Odobenus rosmarus) resting on a small and crowded float of ice. Foxe Basin, Nunavut, Canada, July.

Alex Mustard / A male Golden / White's Seahorse (Hippocampus whitei) gives birth; two baby seahorses are leaving the brood pouch and two others float nearby. Manly, Sydney, New South Wales, Australia, March.

Bryan and Cherry Alexander / Inuit hunter inflating sealskin avatak (float) on ice foot by his kayak. Qeqertat, Thule, Northwest Greenland, 1977.

Bryan and Cherry Alexander / 'Otter' float plane bringing supplies to Innu Autumn hunting camp in Southern Labrador, Canada, 1997.

Ross Hoddinott / Bladder wrack {Fucus vesiculosus} showing pneumatocysts that help seaweed to float, Cornwall, UK. March

Pete Oxford / PAT (Pop off Archival Tag) satellite device for tagging Whale sharks (Rhincodon typus), These tags are designed to release and float to the surface on a programable date, used to study Shark migration...

Pete Oxford / PAT (Pop off Archival Tag) satellite device for tagging Whale sharks (Rhincodon typus), These tags are designed to release and float to the surface on a programable date, Used to study Shark migration...

Juergen Freund / Float on water surface of Portugese man-of-war / Blue Bottle {Physalia physalis} Indo-pacific

Juergen Freund / Portugese man-of-war / Blue Bottle {Physalia physalis} split level showing float and tentacles, Indo-pacific

GEORGETTE DOUWMA / Bluebottle / Portuguese man-of-war (Physalia utriculus) showing its inflated float and long trailing tentacles, swept ashore by onshore winds. Cape, South Africa.

Doug Perrine / Northern / lined / Atlantic seahorse (Hippocampus erectus) young fry moments after birth ie after being expelled from father's brood pouch, as they float just below the water's surface (captive) Digit...

Doug Perrine / Northern / lined / Atlantic seahorse (Hippocampus erectus) male giving birth - expelling fry from pouch - young fry then float to the water's surface, captive, digitally manipulated

Doug Perrine / Northern / lined / Atlantic seahorse (Hippocampus erectus) young fry clinging to each other moments after birth, ie after being expelled from father's brood pouc, as they float just below the water's...

Doug Perrine / Northern / lined / Atlantic seahorse (Hippocampus erectus) male giving birth - expelling fry from pouch - young fry then float to the water's surface, captive, digitally manipulated

Doug Perrine / Northern / lined / Atlantic seahorse (Hippocampus erectus) male giving birth, expelling fry from pouch, young fry then float to the water's surface. Captive, digitally manipulated

Doug Perrine / Northern / lined / Atlantic seahorse (Hippocampus erectus) young fry clinging to each other moments after birth (i.e. after being expelled from father's brood pouch) as they float just below the water...

DOC WHITE / Inuit hunter in kayak with seal skin float, Canadian Arctic

DOC WHITE / Inuit hunter in kayak with seal skin float, Canadian Arctic

DOC WHITE / Inuit hunter in kayak preparing to throw harpoon, with seal skin float behind, Canadian Arctic

JIM CLARE / Rattan collectors float rattan down river, Gorontalo NR, Sulawesi, Indonesia.

Willem Kolvoort / Reflection of Great Pond Snail (Lymnaea stagnalis) floating on water surface, Holland. Pond Snails have lungs and from time to time they float on the surface to breath. After this they can stay for qu...

Solvin Zankl / Seeds of Common Bistort (Bistorta officinalis), Europe. Air in the seedcoat allows the seed to float and disperse in water. Some wind dispersal also occurs.

Solvin Zankl / Seeds of Common Bistort (Bistorta officinalis), Europe. Air in the seedcoat allows the seed to float and disperse in water. Some wind dispersal also occurs.

DOC WHITE / Inuit hunter in kayak with hunting gear including sealskin float, Canadian Arctic

DOC WHITE / Inuit hunter takes aim with harpoon; sealskin float is on back of boat, Canadian Arctic

Julia Bayne / Milkman delivering milk, England

Mark Raycroft / Weimaraner (Canis familiaris) portrait on pier

Yva Momatiuk & John Eastcott / Iceberg breaking up and releasing pieces of ice called bergy bits which float and melt, late summer season, Saglek Fjord, Newfoundland, Canada

Yva Momatiuk & John Eastcott / Iceberg breaking up and releasing pieces of ice called bergy bits which float and melt, late summer season, Saglek Fjord, Newfoundland, Canada

Hiroya Minakuchi / Portuguese Man of War (Physalia physalis) floating on ocean surface, Portugal

Norbert Wu / Weddell Seal (Leptonychotes weddellii) mother and pup float in shallow water under sea ice crack, their breathing holes visible in background, Antarctica

Norbert Wu / By-the-wind Sailor (Velella velella) siphonophore allows the jellyfish to float and the sail catches the wind, California

Mitsuaki Iwago / Domestic Cat (Felis catus) standing on a glass Japanese fishing net float

DOC WHITE / Inuit hunter in kayak with sealskin float and harpoons in front of ice floe, Canadian Arctic

Onne van der Wal / View from under the water surface looking up at a child looking through a snorkelling mask and holding on to a float, Exuma, Bahamas.

Rick Tomlinson / Formula 40 trimaran "Triton Sifo" skippered by Adrian Thomson during the Europe 1 Star, 1988. ^^^ Skipper Alan Thomas was towed to Nantucket by US coast-guards with the starboard float taking water.

Onne van der Wal / Crew of a grounded yacht swinging out on the boom to heel it over so it might float off the bottom.

Roberto Rinaldi / Kelp leaves on the surface of water. The air sacks / vesicles cause the kelp to float, California.

Roberto Rinaldi / Fish caught in net (decentrarchus sp?), Italy, Mediterranean sea.

Roberto Rinaldi / Kelp leaves lying on the surface of the water. The air sacks cause the kelp to float, California

Mitsuaki Iwago / Crabeater Seal (Lobodon carcinophagus) trio resting on ice float, Antarctica

Jim Brandenburg / Float plane pilot and passenger explore Hickerson Lake with Mount Iliamna in background, Alaska