Claudio Contreras / Mexican blind brotula (Typhliasina pearsei) a blind cave fish, sinkhole near Tulum, Yucatan Peninsula, Mexico, August. Endangered species.

Nick Upton / Blind adult male Grey seal (Halichoerus grypus) 'Marlin' waving a flipper at the edge of a convalescence pool where he is a long-term resident, Cornish Seal Sanctuary, Gweek, Cornwall, UK, January. Mo...

Mark MacEwen / Snares island crested penguin (Eudyptes robustus) in forest, Snares Island, New Zealand.

Solvin Zankl / Frilled shark (Chlamydoselachus anguineus) specimen with mouth open, from Atlantic Ocean, at a depth of 729m.

Will Burrard-Lucas / Big-headed mole rat (Tachyoryctes macrocephalus) appearing from its hole, Bale Mountains National Park, Ethiopia. Taken with remote camera.

Mark Hamblin / 2020VISION / Pine marten (Martes martes) juvenile in pine tree in woodland, Beinn Eighe National Nature Reserve, Wester Ross, Scotland, UK, July. Highly commended, 'Animal Portraits' category, British Wildlife Pho...

Daniel Heuclin / Olm (Proteus anguinus) Dinaric Alps, southern Europe, captive

Alex Mustard / 2020VISION / Pair of Common cuttlefish (Sepia officinalis), female in foreground and male behind, note circular mating scars on female caused by the males suckers, Babbacombe Bay, Torbay, Devon, UK, May. Did you k...

Mark Taylor / West Highland White Terrier sitting.

Steven Kazlowski / Rifles used by Inupiaq for hunting whales, seals and birds, hidden behind a snow blind on the pack ice, off the Arctic coastal village of Point Hope, Chukchi Sea, Alaska, May 2008

Jane Burton / Newborn Sandy lop-eared rabbit, one-week, still blind, UK

Jane Burton / Newborn Sandy lop-eared rabbit, bald and blind