Alex Mustard / Aggregation of Golden jellyfish (Mastigias sp.) in a marine lake in Palau, the golden colour of this species comes from symbiotic algae in its tissues. Jellyfish Lake, Eil Malk island, Rock Islands, P...

Floris van Breugel / California poppies (Eschscholzia californica) and California goldfields (Lasthenia californica) extend as far as the eye can see, Antelope Valley Poppy Preserve, California, USA

Floris van Breugel / California poppies (Eschscholzia californica) and California goldfields (Lasthenia californica) extend as far as the eye can see, Antelope Valley Poppy Preserve, California, USA

Floris van Breugel / Monarch butterflies (Danaus plexippus) over winter on Eucalyptus and Monterey Cypress trees near Pismo Beach, San Luis, California, USA December.. When temperatures warm up enough, they will embark on...

Pal Hermansen / Domestic reindeer herd (Rangifer tarandus) group close together in enclosure, Oppland, Norway, September 2014.

Tony Wu / Twinspot snapper (Lutjanus bohar) shoal rushing up to spawn, releasing a cloud of milky white sperm and eggs in the water column. Caroline Islands, Palau, November.

Tony Wu / Twinspot snapper (Lutjanus bohar) engaged in a mass spawning aggregation early in the morning. Caroline Islands, Palau. April. Winner of Underwater category, Wildlife Photographer of the Year 2016.

Pascal Kobeh / Multitudes of Moon jellyfish (Aurelia labiata), Alaska, USA, Gulf of Alaska. Pacific ocean.

Gavin Hellier / Timelapse of commuters walking through Shibuya Station at rush hour, Shibuya, Tokyo, Honshu, Japan, 2011.

Gavin Hellier / Timelapse of a Shinto priest seeking donations on the main shopping street in Ginza, Tokyo, Honshu, Japan, 2011.

Gavin Hellier / Wide timelapse shot of crowds of people crossing the centre of Shibuya shopping and entertainment district, Tokyo, Japan, 2011.

Gavin Hellier / Timelapse of crowds of people crossing the centre of Shibuya shopping and entertainment district, Tokyo, Japan, 2011.