Gavin Hellier / Wide angle shot of the Supertree Grove illuminated at night, Each tree is a large vertical garden, Gardens by the Bay, Singapore, June 2017. Hellier

Ingo Arndt / Baya weaver (Ploceus philippinus) subadult birds practising building 'play nest', Singapore.

Ingo Arndt / Baya weaver (Ploceus philippinus) male flying to nest entrance, Singapore

Cyril Ruoso / Asiatic black bear (Ursus thibetanus) resting, captive at Singapore Zoo. Non-ex

Cyril Ruoso / Pollution washed up in mangroves, Sungei Buloh Natural Park, Singapore. Non-ex

Mark Bowler / Fireflies {Lampyridae} in rainforest, Singapore.

Gavin Hellier / Wide angle shot of the Supertree Grove illuminated at night, Each tree is a large vertical garden, Gardens by the Bay, Singapore, June 2017. Hellier

Gavin Hellier / Wide angle shot of the Supertree Grove illuminated at night, Each tree is a large vertical garden, Gardens by the Bay, Singapore, June 2017. Hellier

Gavin Hellier / Timelapse of people visiting the Supertree Grove, Each tree is a large vertical garden, Gardens by the Bay, Singapore, June 2017. Hellier

Gavin Hellier / Timelapse of people visiting the Supertree Grove illuminated at night, Each tree is a large vertical garden, Gardens by the Bay, Singapore, June 2017. Hellier

Gavin Hellier / Timelapse of the Supertree Grovelight display at night, Each tree is a large vertical garden, Gardens by the Bay, Singapore, June 2017. Hellier

Tony Wu / Smooth-coated otters (Lutrogale perspicillata) eating fish in the early morning in Kallang River, Singapore