David Tipling / Huli Wigmen from the Tari Valley in Southern Highlands of Papua New Guinea, wearing a bill from Blyth's Hornbill as decoration, August 2011

Juan Carlos Munoz / Coloured powder at Pashupatinath Temple, Bagmati River, Kathmandu Valley, Nepal. March 2018.

Kim Taylor / Violet turaco (Musophaga violacea) showing red flight feathers due to turacin, a pigment unique to turacos. Gambia, West Africa

David Shale / Deep sea amphipod (Cystisoma) swimming, a deep sea species from the Mesopelagic zone. Mid-Atlantic Ridge. Body is totally transparent and the redness in the eye is the visual pigment in the retina.

David Shale / Deep sea amphipod (Cystisoma) swimming, a deep sea species from the Mesopelagic zone. Mid-Atlantic Ridge. Body is totally transparent and the redness in the eye is the visual pigment in the retina.

David Shale / Deep sea amphipod (Cystisoma) swimming, a deep sea species from the Mesopelagic zone. Mid-Atlantic Ridge. Body is totally transparent and the redness in the eye is the visual pigment in the retina.

David Shale / Deep sea amphipod (Cystisoma) swimming, a deep sea species from the Mesopelagic zone. Mid-Atlantic Ridge. Body is totally transparent and the redness in the eye is the visual pigment in the retina.

David Shale / Deep sea amphipod (Cystisoma) swimming, a deep sea species from the Mesopelagic zone. Mid-Atlantic Ridge. Body is totally transparent and the redness in the eye is the visual pigment in the retina.

Solvin Zankl / Big fin squid (Magnapinna atlantica) species known only from two specimens collected in the northern Atlantic Ocean. First described in 2006. It is characterised by several unique morphological featu...

Solvin Zankl / Big fin squid (Magnapinna atlantica) species only known from two specimens collected in the northern Atlantic Ocean. First described in 2006. It is characterised by several unique morphological featu...

Doug Perrine / Juvenile Arrow Squid (probably Loligo plei), showing chromatophores (colored pigment sacs) at night. Lighthouse Reef Atoll, Belize, Central America.

Alex Hyde / Red algae living just below the surface of snow, known as 'Red Snow'. The red pigment provides protection from ultra-violet light. Austrian Alps, 2800 metres above sea level, June 2009.

Alex Mustard / 2020VISION / Male Common cuttlefish (Sepia officinalis) in striped breeding colouration, guarding a female as she lays eggs within the seaweeds. Babbacombe Bay, Torbay, Devon, UK, May spawning period. Did you know...

Solvin Zankl / Mating behaviour in Common fruit flies (Drosophila melanogaster) studied in laboratory for gene research, a Yellow (body pigmentation) Curly (wings turn up) type mutant male mates with a Yellow, Curly...

Solvin Zankl / Mating behaviour in Common fruit flies (Drosophila melanogaster) studied in laboratory for gene research, a Curly (wings turn up) and Orange (less red pigment in the eyes) mutant female rejects the ma...

Jurgen Freund / Papua New Guinean artist with the natural pigment he uses when carving Malagan wooden sculptures, the ceremonial art of New Ireland's living culture. The black pigment is made from a fruit of a Kalapu...

Visuals Unlimited / Aspens (Populus tremuloides) in their autumn glory. Western USA.

Adrian Davies / Golden Silk Spider (Nephila clavipes) female on web, Everglades, Florida, USA. December Note yellow pigment in web to attract small bees

John Cancalosi / Barite (BaS04) on Cerrusite Mibladen Morocco Barite (orange) is the major ore of barium (barium sulfate) - Mineral class: sulfates - Barite is an important commercial mineral - Widely used as a pigmen...

Colin Varndell / Dunnock (Prunella modularis) showing white pigment on primary feathers, Dorset, UK, March

Colin Varndell / Dunnock (Prunella modularis) showing white pigment on primary feathers, Dorset, UK, March

Alex Hyde / Red algae living just below the surface of snow, known as 'Red Snow'. The red pigment provides protection from ultra-violet light. Austrian Alps at 2800 metres altitude. June.

Jane Burton / Sleeping 9-day puppies showing pigment freckles on nose

Willem Kolvoort / Great ramshorn snail (Planorbis corneus) sand winning pit, Holland. This snail does not have enough pigment in its skin, the red colour is caused by haemaglobin.

David Shale / Deep sea amphipod {Cystisoma sp} Mesopelagic. Atlantic ocean. Body is totally transparent and the redness in the huge eye is the visual pigment in the retina.

Yva Momatiuk & John Eastcott / Bald Eagle (Haliaeetus leucocephalus) powerful yellow legs and talons get pigment from salmon-rich diet, spring, south central Alaska

Tui De Roy / Greater Flamingo (Phoenicopterus ruber) preening color derived from pigment in Brine Shrimp, Rabida Island, Galapagos Islands, Ecuador

Tui De Roy / Greater Flamingo (Phoenicopterus ruber) preening, color derived from pigment in Brine Shrimp a main food source, Rabida Island, Galapagos Islands, Ecuador

Eric Baccega / Female white or bleached tiger (Panthera tigris) with her cub, aged 10 days. This female tiger is a hybrid crossed from a Siberian tiger and Bengal tiger, has blue eyes and white fur caused by a lack...

John Cancalosi / Barite (BaS04), the main ore of barium, with Chalcopyrite. Mineral class: sulfates, barite is an important commercial mineral, widely used as a pigment, and used in medical tests. Sample from Dreislar...

Visuals Unlimited / Variegated leaf colours of Painted Nettle (Coleus blumei)

John Cancalosi / Barite (barium sulphate, BaS04) on Cerrusite. Barite (orange), the major ore of barium, is an important commercial mineral widely used as a pigment and in medical tests. Cerrusite (lead carbonate, PbC...

Visuals Unlimited / Autumn leaves of Nandina plants. Sunlight stimulates the synthesis of red anthocyanin pigments in the fall but where part of the leaf is shaded by another leaf only the yellow carotenoid pigments are...

Visuals Unlimited / Pinesap / False beechdrops (Monotropa hypopitys) saprotrophic plants, North America.

Visuals Unlimited / Squaw Root (Conopholis americana), a parasitic plant that lacks chlorophyll and lives on tree roots, especially Oaks (Quercus sp), Orobranchaceae, Eastern North America.

Visuals Unlimited / Squaw Root (Conopholis americana), a parasitic plant that lacks chlorophyll and lives on tree roots, especially Oaks (Quercus sp), Orobranchaceae, Eastern North America.

Visuals Unlimited / Red Maple tree (Acer rubrum) leaves beginning to change to colour in autumn, North America.

Visuals Unlimited / Sugar Maple (Acer saccharum) in autumn colours, Eastern North America.

Visuals Unlimited / Variegated leaves of Joseph's coat (Amaranthus tricolor).

Visuals Unlimited / Variegated leaves of Coleus plant

Visuals Unlimited / Difference in chlorophyll content between the darker upper surface of a Red Maple leaf and the lighter lower surfaces (Acer rubrum), North America.

Visuals Unlimited / Caladium leaf variety.

Visuals Unlimited / Etiolation of leaves shows the lack of chlorophyll for plants exposed to little or no light.

Visuals Unlimited / Chlorophyll in regular Asparagus plants on the left and bleached Asparagus plants on the right caused by the lack of sunlight.

Visuals Unlimited / Plant pigments in Red Maple leaves (Acer rubrum), including chlorophyll, carotenoids, xanthophylls, and anthocyanins, North America.

Visuals Unlimited / Various pigments of autumn Red Oak leaves (Quercus rubra), anthocyanins, carotenoids, xanthophylls, and chlorophyll, North America.