Edwin Giesbers / European pond turtle (Emys orbicularis), swimming with head above water, Lesbos, Greece

Stephen Dalton / Garden spider {Araneus diadematus} constructing its orb web, UK, Sequence 5/5 , The final web is complete. Note that although all the final sticky spirals are visible, most of the radials are invisibl...

Nick Upton / Invisible spider (Drapetisca socialis) on an old house wall, Wiltshire, UK, September.

Martin Willis / Northern Leaf-tailed Gecko (Saltuarius cornutus) showing lichen-like camouflage that renders it almost invisible in its surroundings, Atherton Tableland, Queensland, Australia

Martin Willis / Northern Leaf-tailed Gecko (Saltuarius cornutus) showing lichen-like camouflage that renders it almost invisible in its surroundings, Atherton Tableland, Queensland, Australia

George Sanker / Young Bighorn Sheep (Ovis canadensis) perfectly camouflaged against rocky mountain side. Yellowstone National Park, Wyoming, USA, June.

Juergen Freund / Sponge decorator crab (Hyastenus elatus) almost invisible under the sponges attached to its shell. Lembeh Strait, North Sulawesi, Indonesia.

Stephen Dalton / Invisible spider (Drapetisca socialis) UK

Stephen Dalton / Invisible money spider (Drapetisca socialis) camouflaged against beech tree trunk. UK

Piper Mackay / Great Potoo (Nyctibius grandis) camouflaged against the trunk of a tree, sleeping during day. Pantanal, Brazil.

Stephen Dalton / Garden spider {Araneus diadematus} constructing its orb web, UK, Sequence 3/5, The temporary spirals are in place, now the spider is constructing the main spirals, removing the temporary spirals on th...

Stephen Dalton / Garden spider {Araneus diadematus} constructing its orb web, UK, Sequence 4/5, The temporary spirals are in place, now the spider is constructing the main spirals, removing the temporary spirals on th...

Stephen Dalton / Invisible spider (Drapetisca socialis) hunting on trunk of a beech tree, UK

Stephen Dalton / Invisible spider (Drapetisca socialis) on trunk of Beech tree, UK, Linyphidae

Stephen Dalton / Invisible spider (Drapetisca socialis) on trunk of Beech tree, UK, Linyphidae

Stephen Dalton / Invisible spider (Drapetisca socialis) on trunk of Beech tree, UK, Linyphidae

Miles Barton / Madagascan day gecko (Phelsuma madagascariensis) on tree trunk lapping honey dew from a sap sucking planthopper insect (invisible). Kirindy Dry Forest, Madagascar.

Piotr Naskrecki / Fantastic Leaf-tail Gecko (Uroplatus phantasticus) becomes virtually invisible thanks to its leaf-like shape, pose and coloration, they can change their color easily due to chromatophores in their ski...

Piotr Naskrecki / Fantastic Leaf-tail Gecko (Uroplatus phantasticus) becomes virtually invisible thanks to its leaf-like shape, pose and coloration, they can change their color easily due to chromatophores in their ski...

Constantinos Petrinos / Thorny seahorse hunting invisible prey {Hippocampus histrix} Sulawesi Indonesia

Luke Massey / 2020VISION / Male Siskin (Carduelis spinus) perched on an Alder (Alnus) twig, Hertfordshire, England, UK, February. Did you know? According to German legend, Siskins hide stones in their nest which makes them inv...

Premaphotos / Invisible spider female (Drapetisca socialis) on the trunk of a Beech tree, UK

Premaphotos / Invisible spider (Drapetisca socialis) female well camouflaged against tree bark, UK

Gary Braasch / Photographer Gary Braasch at the Broggi Glacier comparing a photograph taken in 1932 of the same view. This glacier had receded about one kilometer in 67 years and the remnant was almost invisible amo...

Christian Ziegler / Leaf-tailed Gecko (Uroplatus sikorae) camouflaged on branch so that it seems invisible, Madagascar

Pascal Kobeh / Blue chromis (Chromis cyanea) with parasitic Isopod (Anilocra sp) female feeding on blood. Male isopods invisible to naked eye, female excretes a chemical substance to maintain masculinity of small ma...