Nick Garbutt / Aggregation / bloom / swarm of Moon Jellyfish (Aurelia aurita) in the clear waters of Loch Na Keal, off the Isle of Mull, north west Scotland, UK, June, Photographed through the surface.
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Kim Taylor / Female Red mason bee (Osmia bicornis) stocking her nest in a glass tube with nectar and pollen before laying an egg, followed by her sealing the cell with mud, Surrey, UK, April.
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Solvin Zankl / Portrait of Sea elephant (Cardiopoda placenta) marine pelagic gastropod mollusc in the family Pterotracheidae. Deep sea heteropod. Atlantic Ocean, close to Cape Verde. Controlled conditions.
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Solvin Zankl / Adult Deepsea pelagic octopod (Vitreledonella richardi) swimming downwards before disappearing into the darkness, Atlantic Ocean, close to Cape Verde. Controlled conditions.
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Solvin Zankl / Echinopluteus larvae. Pluteus larvae occur during the life cycles (ontogenesis) of sea urchins and brittle stars that belong to the echinoderms. Raunefjorden near Bergen, Norway.
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Magnus Lundgren / Juvenile Wunderpus octopus (Wunderpus photogenicus) Balayan Bay, off Anilao, Batangas, Philippines, Pacific Ocean.
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Shane Gross / Great hammerhead shark (Sphyrna mokarran) swimming over sandy seabed, Bimini, Bahamas.
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Alex Mustard / Light patterns on the seabed and fluffy cumulus clouds in the sky in a split level image. North Sound, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea.
Shane Gross / Moorish idol (Zanclus cornutus) juvenile with transparent skin in the open ocean at night off Anilao, Philippines.
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Shane Gross / Wonderpus octopus (Wunderpus photogenicus) in its juvenile or larval stage. At this stage it is transparent and drifts in the open ocean as plankton. Anilao, Philippines.
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Alex Mustard / RF - Pod of Atlantic spotted dolphins (Stenella frontalis) swimming over a shallow, sandy seabed. North Bihmini, Bahamas. (This image may be licensed either as rights managed or royalty free.)
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Nick Garbutt / Emerald Glass Frog (Centrolenella proseblepan) on leaf. Mid-altitude rainforest, Bosque de Paz, Pacific slope, Costa Rica, Central America.
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Luis Quinta / Moon jellyfish (Aurelia aurita) near the surface, Santa Maria Island, Azores, September.
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Alex Hyde / Low angle view of Porcelain fungus (Oudemansiella mucida) growing on a dead Beech tree (Fagus sylvatica). Plitvice Lakes National Park, Croatia. November.
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Edwin Giesbers / Reticulated glass frog (Hyalinobatrachium valerioi) captive, occurs in Colombia, Costa Rica, Ecuador, and Panama
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Klein & Hubert / Laughing gull (Leucophaeus atricilla) in flight over Caribbean sea with fish below surface, Bahamas.
Alex Hyde / Spider (Tegenaria sp.) in dew-covered web in limestone cave, Plitvice Lakes National Park, Croatia. January.
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Floris van Breugel / Flawless crystalline ice, produced through millennia of glacial pressure, floating on Lago Grey, Torres del Paine National Park, Chile, June 2014.
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Olga Kamenskaya / Transparent ice formation on Lake Baikal, Siberia, Russia, March 2012.
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Olga Kamenskaya / Ice formations on Lake Baikal, Siberia, Russia, March 2012.
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Olga Kamenskaya / Ice formations in snow on Lake Baikal, Siberia, Russia, March 2007.
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Olga Kamenskaya / Ice formations on Lake Baikal, Siberia, Russia, March 2007.
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Olga Kamenskaya / Clear pane of ice on Lake Baikal, Siberia, Russia, March 2007.
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Olga Kamenskaya / Man looking through transparent ice (1m thick) on lake surface to see diver below. Lake Baikal, Russia, March 2008. Model released.
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Olga Kamenskaya / Ice stalagmites / ice spikes formation, Lake Baikal, Siberia, Russia, March.
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Olga Kamenskaya / Ice fragment reflected in the ice of Lake Baikal, Siberia, Russia, March.
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Olga Kamenskaya / Clear panes of ice on Lake Baikal, Siberia, Russia, March.
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Olga Kamenskaya / Clear pane of ice, Lake Baikal, Siberia, Russia, March.
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Ingo Arndt / Red-eyed tree frog (Agalychnis callidryas) eye closed with semi-transparent eyelid that allows it to see its surroundings even while resting, Costa Rica.
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Ingo Arndt / Red-eyed Tree Frog (Agalychnis callidryas) close- up of eye half open, the golden webbed semi-transparent eyelid allows to see its surrounding even while resting, Costa Rica.
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Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, trying to steal fish (trout) hanging on transparent fishing line. Vauldalen, Sor-Trondelag, Norway, April
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Alex Mustard,Alex Mustard / A nudibranch (Flabellina nobilis) feeding on a solitary hydroid (Tubularia indivisa), note how the hydroid is bent back as it is pulled into the nudibranch's mouth. Gulen, Bergen, Norway. North East A...
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Alex Mustard,Alex Mustard / A portrait of a small Candy stripe shrimp (Lebbeus grandimanus) in front of its host pink anemone (out of focus because of the magnification). Browning Wall, Browning Pass, Port Hardy, Vancouver Islan...
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Barrie Britton / Mantellid Frog Tadpoles (Guibemantis species) developing on leaf overhanging pond.
Association Mitsinjo Reserve, Andasibe, Madagascar.
Photograph taken on location for BBC 'Wild Madagascar' Series,...
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Gavin Hellier / People commuting through glass walled passageway in modern building, Berlin, Germany, 2009. No release available.
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Graham Eaton / Common / Moon Jellyfish (Aurelia aurita) seen from below. Cardigan Bay, Wales, June. Highly commended, marine category, British Wildlife Photography Awards (BWPA) competition 2012.
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Solvin Zankl / Snowflake magnified under microscope, Lilehammer, Norway
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David Shale / Male and Female glass shrimps on Glass sponge (Hexactinellida) from coral seamount, SW Indian Ridge, Indian Ocean, December 2011
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Alex Mustard / Underwater scene where light and water interplay on a shallow sand bank, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea, September 2005.
