Tony Wu / Male Korean seahorse (Hippocampus haema) giving birth. Kumamoto Prefecture, Kyushu, Japan.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) egg hatching on father's feet. Atka Bay, Antarctica. August. Winner of the Portfolio category of the Wildlife Photographer of the Year Awards 2019.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri), two males, one brooding young chick, the other incubating hatching egg. Atka Bay, Antarctica. August. Series 4/4.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri), two males, one brooding young chick, the other incubating hatching egg. Atka Bay, Antarctica. August. Series 3/4.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri), two males, one brooding young chick, the other incubating hatching egg. Atka Bay, Antarctica. August. Series 2/4.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri), two males, one brooding young chick, the other incubating hatching egg. Atka Bay, Antarctica. August. Series 1/4.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) male feeding chick aged a few days. Atka Bay, Antarctica. August. Sequence 1/2.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) male feeding chick aged a few days. Atka Bay, Antarctica. August.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri), group of three males incubating, one with begging chick. Atka Bay, Antarctica. August.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) egg hatching on father's feet. Atka Bay, Antarctica. August.

Christophe Courteau / Mountain gorilla (Gorilla beringei beringei), silverback and juvenile son. Volcanoes National Park. Rwanda.

Marie Read / Eared grebes (Podiceps nigricollis), pair, one adult feeding one of two chicks riding on the other adult's back, Bowdoin National Wildlife Refuge, Montana, USA

Marie Read / Eared grebes (Podiceps nigricollis), pair, one adult carrying food (damselfly) for two chicks riding on the other adult's back, Bowdoin National Wildlife Refuge, Montana, USA

Marie Read / Eared grebes (Podiceps nigricollis), pair, one adult feeding chick riding on the other adult's back, Bowdoin National Wildlife Refuge, Montana, USA

MYN / JP Lawrence / Lovely poison frog (Phyllobates lugubris) male with a tadpole, Isla Colon, Panama, June. Meetyourneighbours.net project

Neil Aldridge / African Lion (Panthera leo) cub reaches for a moment of intimacy with its father, Northern Tuli Game Reserve, Botswana

Anup Shah / Western lowland gorilla (Gorilla gorilla gorilla) dominant male silverback 'Makumba' aged 32 years feeding on rotten wood from a tree while his juvenile son 'Tembo' aged 4 years waits his turn, Bai Ho...

Anup Shah / Western lowland gorilla (Gorilla gorilla gorilla) dominant male silverback 'Makumba' aged 32 years feeding on rotten wood from a tree while his juvenile son 'Tembo' aged 4 years waits his turn, Bai Ho...

Anup Shah / Western lowland gorilla (Gorilla gorilla gorilla) dominant male silverback 'Makumba' aged 32 years feeding on fruit with his son 'Tembo' aged 4 years sitting in the background, Bai Hokou, Dzanga Sangh...

Anup Shah / Western lowland gorilla (Gorilla gorilla gorilla) dominant male silverback 'Makumba' aged 32 years standing in a bai watched by son 'Tembo' aged 4 years, Bai Hokou, Dzanga Sangha Special Dense Forest...

Merryn Thomas / Man carrying child along footpath on a stormy day on St. Martin's, Isles of Scilly, UK, January 2012. No release available.

Nick Turner / Couple with child in seat cycling in the Cotswolds at Guiting Power, Gloucestershire, UK, August 2011. Model released

Nick Turner / Walkers on the South West Coast Path National Trail near Durdle Door, Dorset, UK, May 2009.

Terry Whittaker / 2020VISION / Anita and Kenneth Okwara with RSPB staff member Lyndon Parker buy RSPB products on South Bank. RSPB 'Date With Nature Event' for learning about urban Peregrine falcon, Tate Modern, South Bank, London,...

Paul Harris / 2020VISION / Family on raised wooden walkway on visit to the Westhay Nature Reserve, Somerset Levels, UK, June 2011, model released

Paul Harris / 2020VISION / Family pond dipping in rhyne, visiting the Westhay Nature Reserve, Somerset Levels, UK, June 2011, model released

Paul Harris / 2020VISION / Family pond dipping in rhyne, visiting the Westhay Nature Reserve, Somerset Levels, UK, June 2011, model released

Paul Harris / 2020VISION / Family visiting the Westhay Nature Reserve, Somerset Levels, UK, June 2011, model released

Kevin Schafer / Southern / Double-wattled cassowary (Casuarius casuarius) wild, adult male with chick in rainforest, Atherton Tablelands, Queensland, Australia, November

Mark Taylor / Fawn Pug puppy, 8 weeks, wearing a Father Christmas hat.

Neil Lucas / Sea nettles (Chrysaora quinquecirrha) in aquarium, with crowd of people watching, Atlanta, USA, October 2009

Charlie Hamilton James / 2020VIS / Kingfisher (Alcedo atthias) adult male flying into nest with fish. Halcyon River, England, UK. 2020VISION Exhibition. 2020VISION Book Plate.

Mark Bowler / Silver arowana fish (Osteoglossum bicirrhosum) young fish are collected from the father fish who guards the young in his mouth and then released in a fish farm to grow until the price increases with d...

Mark Bowler / Silver arowana (Osteoglossum bicirrhosum) Amazonian fish occuring in Varzea flooded forests of the amazonian rainforest. These babies with their yolk sacks have been collected for the ornamental fish...

Mark Taylor / White-and-merle Border Collie-cross puppy, Ice, 14 weeks, wearing a Father Christmas hat.

Jane Burton / Tabby cat under a Father Christmas hat.

Jane Burton / Rabbit wearing a Father Christmas hat.

Jane Burton / A playful tabby kitten pouncing on a West Highland White Terrier puppy as he pokes his head out from a Father Christmas hat. NOT AVAILABLE FOR BOOK USE

Jane Burton / Poodle with scarf and Father Christmas hat.

Mark Taylor / Silver tabby chinchilla Persian male cat Cosmos, wearing a Father Christmas hat.

Mark Taylor / Airdale Terrier bitch puppy, Molly, 3 month, wearing a Father Christmas hat.

Mark Taylor / Maine Coon kitten wearing a Father Christmas hat.

Mark Taylor / Maine Coon kitten wearing a Father Christmas hat and scarf.

Juergen Freund / Christmas Island red crab (Gecarcoidea natalis) wearing Father Christmas hat, Christmas Island, Indian Ocean

Jane Burton / Domestic cat, red female kitten sitting on her father 'Ozzie'

Doug Perrine / Ring-eye jawfish male expels larvae after brooding eggs in mouth for a week {Opistognathus sp} Borneo (Non-ex).

Jeff Rotman / Father and sons observe Caribbean reef shark. {Carcharhinus perezi} Bahamas. Model released. Model released.