Alex Mustard / 2020VISION / Phosphorescent Seapen (Pennatula phosphorea) extends out of the muddy seabed in the calm waters of the upper reaches of a Scottish sea loch. Loch Duich, Ross and Cromarty, Scotland, UK, April

Jerry Monkman / A woman kayaking on the upper reaches of the York River at high tide, sunset, York, Maine, USA. Model Released. May 2008

Jerry Monkman / A woman kayaking on the upper reaches of the York River at high tide, York, Maine, USA. Model Released. May 2008

Yukihiro Fukuda / Japanese macaque / Snow monkey {Macaca fuscata} four-day-old newborn baby reaches up for mother's nipple, Jigokudani, Nagano, Japan

Colin Monteath / Climber hauls load above 4,200 meter camp on the west buttress route of Mt Denali or Mt McKinley which reaches 6,194 meters elevation, Denali National Park and Preserve, Alaska

Norbert Wu / Humboldt Squid (Dosidicus gigas) reaches five feet and 50 pounds, a voracious carnivore, Sea of Cortez, Baja California, Mexico

Tim MacMillan / John Downer Pr / Multiflash image of Lesser bushbaby jumping, body vertical until it reaches apex, then it changes direction. (Resolution restriction due to image digitised from film - 'Weird Nature' BBC tv series).

Laurie Hedges / Tracking shot showing a large area of rainforest flooded by a hydroelectric dam in the southern reaches of the Amazon, Brazil, 2019.

Olga Kamenskaya / Upper reaches of the Lena River. Diving Expedition in real wild taiga. Baikalo-Lensky Reserve, Siberia, Russia. August 2018.

Olga Kamenskaya / Photographers and fishermen standing in the upper reaches of the Lena River. Baikalo-Lensky Reserve, Siberia, Russia. August 2018.

Olga Kamenskaya / The upper reaches of the Lena River. Diving Expedition in real wild taiga. Baikalo-Lensky Reserve, Siberia, Russia. August 2018.

Olga Kamenskaya / Grayling (Thymallus thymallus) in the upper reaches of the Lena River. Baikalo-Lensky Reserve, Siberia, Russia. August 2018.