Shane Gross / Graysby fish (Cephalopholis cruentata) a type of grouper, hiding in a sponge off Eleuthera, Bahamas.

SINCLAIR STAMMERS / Timelapse of filaments of Oscillatoria, a type of Blue green algae gliding over each other, filmed using differential interference contrast.

Brent Stephenson / Type B Killer whale (Orca orcinus) surfacing, close-up, Antarctic Sound, Antarctic Peninsula, Antarctic, January.

John Cancalosi / Cross-Section of Utah Septarian Nodule, Utah. A type of geode, Utah Septarian Nodules are found about 15 miles east of Zion National park. They were formed in an ancient sea floor during the Cretaceou...

Carol Walker / Lusitano horse, bull fighter mounted on grey stallion, in this type of bull fighting neither horse nor bull are injured, Portugal, May 2011, model released

Solvin Zankl / Laboratory culture of Wild type Common fruit flies (Drosophila melanogaster) Vienna Drosophila RNAi Center, Institute for Molecular Pathology, Austria

Alex Mustard / 2020VISION / Colourful deadman's fingers (Alcyonium digitatum) a type of soft coral, growing on a wall in Conservation Bay, Loch Carron, Scotland, UK, April. Model released.

Kathryn Jeffs / Southern Type B Killer whales (Orcinus orca) hunting Weddell seal (Leptonychotes weddelli) spyhopping to assess where seal is on ice floe and to intimidate, Antarctica. Taken on location for BBC Froz...

Kathryn Jeffs / Southern Type B Killer whales (Orcinus orca) hunting Weddell seal (Leptonychotes weddelli) using coordinated wave washing technique, Antarctica. Taken on location for BBC Frozen Planet series, Januar...

Kathryn Jeffs / Southern Type B Killer whale (Orcinus orca) hunting Weddell seal (Leptonychotes weddelli) spyhopping to assess where seal is on ice, whilst Humpback whale (Megaptera novaeangliae) surfaces nearby, Ant...

Kathryn Jeffs / Southern Type B Killer whale (Orcinus orca) hunting Weddell seal (Leptonychotes weddelli), Antarctica. Taken on location for BBC Frozen Planet series, January

Kathryn Jeffs / Southern Type B Killer whales (Orcinus orca) hunting Weddell seal (Leptonychotes weddelli) using coordinated wave washing technique, Antarctica. Taken on location for BBC Frozen Planet series, Januar...

Kathryn Jeffs / Southern Type B Killer whale (Orcinus orca) spyhops to see if Crabeater seals (Lobodon carcinophagus) are potential prey, Antarctica. Taken on location for BBC Frozen Planet series, January 2009

Kathryn Jeffs / Filming Southern Type B Killer whales (Orcinus orca) in Antarctica. Taken on location for BBC Frozen Planet series, January 2009

Bryan and Cherry Alexander / Dramatic 'Undulatus asperatus' cloud formation as a storm builds at dawn over Qaanaaq, Inglefield Bay. Northwest Greenland, September 2008. This cloud formation was first proposed as a new type of clo...

LYNN M. STONE / Portrait of English Springer Spaniel (field type). Elkhorn, Wisconsin, USA, January.

LYNN M. STONE / Persian Kitten (Baby Doll type) Illinois, USA

LYNN M. STONE / Persian kitten (baby doll type) in strawberry basket, Illinois, USA

Tim Laman / Praying mantis (Mantodea) green leaf mimic type walking along a mossy branch in lowland rainforest, Gunung Palung National Park, Borneo, West Kalimantan, Indonesia

Peter Lewis / Light trails from a passing vehicle in the Laerdalstunnelen road tunnel, the longest of its type in the world. Norway, Europe. June 2009

Norbert Wu / Coral Grouper (Cephalopholis miniata) a type of grouper, changes color at will, Great Barrier Reef, Australia

Nigel Cattlin / White pasqueflower (Pulsatilla vulgaris 'Alba') cross section, close up of stamens and stigma, cultivated in garden. Berkshire, England, UK. April.

Shane Gross / Turtlegrass (Thalassia testudinum) a type of seagrass, off Eleuthera Island, Bahamas.

Graham Eaton / A PDC (polycrystalline diamond compact) type oil field drill bit on one othe Kimmeridge ledges. Kimmeridge Bay, Dorset, UK, March. The ledges are hard Jurassic age, carbonate rich horizons of Limetone...

Markus Varesvuo / Ruff (Philomachus pugnax) 'territorial' type male displaying, Vardo, Norway, May.

Markus Varesvuo / Ruff (Philomachus pugnax) 'territorial' type male displaying, Vardo, Norway, May.

Doug Perrine / Pyrosome, a type of pelagic colonial tunicate known for its bioluminescence, photographed at night, Kona, Hawaii, USA.

Lynn M. Stone / Head close up of Black labrador retriever dog (field type) swimming in pond with autumn reflections, Rhode Island, USA

Constantinos Petrinos / Modern wagas for sale in the backyard of a tourist shop in Addis Ababa. A waga, also known as a waka / waaka, is a type of memorial statue carved from wood in southern Ethiopia. Addis Ababa, Ethiopia....

Constantinos Petrinos / Modern wagas for sale in the backyard of a tourist shop in Addis Ababa. A waga, also known as a waka / waaka, is a type of memorial statue carved from wood in southern Ethiopia. Addis Ababa, Ethiopia....

Adrian Davies / Undulatus asperatus clouds, Provence, France, May 2014. This cloud formation was first proposed as a new type of cloud in 2009, and if formally recognized will be the first cloud formation named in 60...

Tui De Roy / Feral chicken (Gallus gallus domesticus) cock, these have reverted to ancestral type nearly identical to Red jungle fowl. Galapagos

Tui De Roy / Feral chicken (Gallus gallus domesticus) hen and chicks, these have reverted to ancestral type nearly identical to Red jungle fowl. Galapagos

Tui De Roy / Feral chicken (Gallus gallus domesticus) hen and chick, these have reverted to ancestral type nearly identical to Red jungle fowl. Galapagos

Tui De Roy / Feral chicken (Gallus gallus domesticus) hen and chicks, these have reverted to ancestral type nearly identical to Red jungle fowl. Galapagos

Tui De Roy / Feral chicken (Gallus gallus domesticus) hen and chick, these have reverted to ancestral type nearly identical to Red jungle fowl. Galapagos

Tui De Roy / Feral chicken (Gallus gallus domesticus) hen and chicks, these have reverted to ancestral type nearly identical to Red jungle fowl. Galapagos

SINCLAIR STAMMERS / Timelapse of filaments of Oscillatoria, a type of Blue green algae gliding over each other, filmed using differential interference contrast.

SINCLAIR STAMMERS / Timelapse of filaments of Oscillatoria, a type of Blue green algae gliding over each other, filmed using differential interference contrast.

Tony Wu / Joro spider (Nephilia clavata) female a type of golden silk orb-weaver spider common in Japan during the autumn. With the spider's chelicerae, or jaws, clearly visible. These deliver a neurotoxin simi...

Mark Carwardine / Type 1 North-east Atlantic Killer whale / Orca (Orcinus orca) surfacing, Snaefellsnes Peninsua, western Iceland, January

Mark Carwardine / Type 1 North-east Atlantic Killer whales / Orca (Orcinus orca) pod surfacing close to shore, Snaefellsnes Peninsua, western Iceland, January

Mark Carwardine / Type 1 North-east Atlantic Killer whale / Orca (Orcinus orca) surfacing, Snaefellsnes Peninsua, western Iceland, January

Mark Carwardine / Type 1 North-east Atlantic Killer whale / Orca (Orcinus orca) lob-tailing at surface, Snaefellsnes Peninsua, western Iceland, January

Mark Carwardine / Type 1 North-east Atlantic Killer whales / Orca (Orcinus orca) pod surfacing close to shore, Snaefellsnes Peninsua, western Iceland, January

Mark Carwardine / Type 1 North-east Atlantic Killer whale / Orca (Orcinus orca) male surfacing close to shore, Snaefellsnes Peninsua, western Iceland, January

Roger Powell / Airboat used by tourists for leisure activities; this type of vessel, because of its shallow draft, can get into areas that other boats can't, however it is extremely noisy and disturbs wildlife, espe...

Mark Carwardine / Orca (Orcinus orca), type one, male surfacing, Snaefellsnes Peninsula, western Iceland

Mark Carwardine / Orca (Orcinus orca), type one, male surfacing, Snaefellsnes Peninsula, western Iceland

Mark Carwardine / Orca (Orcinus orca), type one, male surfacing, Snaefellsnes Peninsula, western Iceland

Mark Carwardine / Orca (Orcinus orca), type one, with flaccid or collapsed dorsal fin, caused by stress, traumatic injury or ill-health, Snaefellsnes Peninsula, western Iceland

Paul D Stewart / Woodbury type photo of Sir Joseph Hooker (1817-1912) from 'Men of Mark', by Lock and Whitfield, published 1881 by Sampson Low.

Paul D Stewart / Woodbury type photographic portrait of Charles Darwin with his signature, taken around 1874.

Lynn M Stone / English Springer Spaniel (show type) by red berries, wild grasses, Waterford, Connecticut, USA

Lynn M Stone / English Springer Spaniel (show type) by red berries, wild grasses, Waterford, Connecticut, USA

Lynn M Stone / English Springer Spaniel (show type) by red berries, wild grasses, Waterford, Connecticut, USA

Lynn M Stone / English Springer Spaniel (show type) on estate grounds, Waterford, Connecticut, USA

Will Watson / Common carp (Cyprinus carpio) wild type and Mirror carp mutation held side by side for comparison during fish survey of pools, Herefordshire, England, UK, MArch.

Brent Stephenson / Type B Killer whale / Orca (Orca orcinus) surfacing, Antarctic Sound, Antarctic Peninsula, Antarctic, January.

Constantinos Petrinos / Waga (waka) a type of memorial statue carved from wood, Konso Special Woreda District, great rift valley, Ethiopia, Africa, March 2009.

Constantinos Petrinos / Waga (waka) a type of memorial statue carved from wood, Konso Special Woreda District, great rift valley, Ethiopia, Africa, March 2009.

Mark Bowler / Rainforest aerial showing secondary forest, land cleared for small-scale agriculture in the traditional sustainable 'chacra' system (a type of slash and burn that returns to forest in rotation) Amazon...

Mark Bowler / Aerial view of secondary forest, and land cleared for small-scale agriculture in the traditional sustainable 'chacra' system (a type of slash and burn that returns to forest in rotation) Amazon Region...

Cheryl-Samantha Owen / Portrait of female farm worker planting Onions (Allium cepa) on Suikerbossie farm, Koue Bokkeveld / Cedarberg region, South Africa. She has onions tucked into her hood to keep the flying insects away,...

Alex Mustard / Tiny (10mm) pygmy seahorse (Hippocampus denise) sheltering in seafan. This is an unusual colour type of denise pygmy seahorse and is probably male. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Mo...

Michael Pitts / Diver on the bow of U-Boat -U352. Type VIIC sunk off Cape Lookout on the 9th May 1942, North Carolina, USA, September 2013.

Michael Pitts / Diver on the conning tower of U-Boat -U352. Type VIIC sunk off Cape Lookout on the 9th May 1942, North Carolina, USA, September 2013.

Tui De Roy / Domestic Chicken (Gallus domesticus) feral individual reverted to ancestral type, Santa Cruz Island, Ecuador

John Cancalosi / Anthophyllite, ((Mg,Fe)7Si8O22(OH)2) a type of Amphibole mineral, from South Finland

John Cancalosi / Alabaster, a type of gypsum CaSO42H2O, from Garden of the Gods, Colorado, USA.

Lynn M Stone / English Springer Spaniels (show type) in Virginia Cowslip (Lamprocapnos spectabilis) Rockton, Illinois, USA. Non-exclusive

Lynn M Stone / English Springer Spaniels (show type) in Virginia Cowslip (Lamprocapnos spectabilis) Rockton, Illinois, USA. Non -exlusive

Lynn M Stone / English Springer Spaniels (show type) in Virginia Cowslip (Lamprocapnos spectabilis) Rockton, Illinois, USA. Non-exlusive.

Lynn M Stone / English Spring Spaniel (show type) in spring, Marengo, Illinois, USA. Non-exclusive

Lynn M Stone / English Spring Spaniel (show type) in spring, Marengo, Illinois, USA

Lynn M Stone / English Spring Spaniel (show type) in spring, Marengo, Illinois, USA. Non-exclusive

Lynn M Stone / English Spring Spaniel (show type) in spring, Marengo, Illinois, USA

Lynn M Stone / English Spring Spaniel (show type) in spring, Marengo, Illinois, USA

Lynn M Stone / English Spring Spaniel (show type) in spring, Marengo, Illinois, USA

Lynn M Stone / English Spring Spaniel (show type) in spring, Marengo, Illinois, USA

LYNN M. STONE / Cocker Spaniel (American show type) in autumn; Pomfret, Connecticut, USA.

Sue Daly / Topknot (Zeugopterus punctatus) a type of flatfish. Gouliot Caves, Sark, British Channel Islands, August.

Jabruson / 'Ngoumou' strangler Fig tree (Ficus sp) wrapped around host tree, which it will eventually kill. The latex (Idjoro) is used for killing birds by local people, hunters roll the latex onto sticks which...

Jabruson / 'Ngoumou' strangler Fig tree (Ficus sp) wrapped around host tree, which it will eventually kill. The latex (Idjoro) is used for killing birds by local people, hunters roll the latex onto sticks which...

Carol Walker / Lusitano horse, bull fighter mounted on grey stallion, in this type of bull fighting neither horse nor bull are injured, Portugal, May 2011, model released

Carol Walker / Lusitano horse, mounted bull fighter in arena with bull, in this type of bullfight neither bull nor horse are injured, Portugal, May 2011, model released

Carol Walker / Lusitano horse, mounted bull fighter in arena with bull, in this type of bullfight neither bull nor horse are injured, Portugal, May 2011, model released

Jan Hamrsky / Scud (Gammarus fossarum), a type of amphipod or freshwater shrimp. Czech Republic, controlled conditions.

Jan Hamrsky / Scuds (Gammarus fossarum), a type of amphipod or freshwater shrimp on stem. Czech Republic, controlled conditions.

Jan Hamrsky / Scud (Gammarus fossarum), a type of amphipod or freshwater shrimp. Czech Republic, controlled conditions.

Jan Hamrsky / Scud (Gammarus fossarum), a type of amphipod or freshwater shrimp. Czech Republic. Controlled conditions.

Charlie Summers / Navajo hogan constructed for a woman. The type of construction, specifically how the entrance is made, determines the gender of a hogan. Monument Valley, Arizona, September 2011.

Brent Stephenson / Killer Whale / Orca (Orcinus orca) (Antarctic Type B) female just surfacing. Nelson Strait, South Shetland Islands, Antarctica, January.

Brent Stephenson / Killer Whale / Orca (Orcinus orca) (Antarctic Type B) female just surfacing. Nelson Strait, South Shetland Islands, Antarctica, January.

Brent Stephenson / Killer Whale / Orca (Orcinus orca) (Antarctic Type B) family group with breaching youngster. Nelson Strait, South Shetland Islands, Antarctica, January.

Luiz Claudio Marigo / Clouds of the type Mammatus above Rio de Janeiro city, these clouds usually indicate the imminent arrival of a cold front cold, Brazil, June 2011