Remi Masson / Eurasian beaver (Castor fiber) carrying branches back to lodge, dropping them when alarmed. River Rhone, Rhone-Alpes, France, June.

Ben Cranke / Black-striped capuchin (Sapajus libidinosus) using rock as a tool to break open palm nut, Parnaiba Headwaters National Park, Piaui, Brazil. July.

Barrie Britton / Wasp (Ropalidia species) attacking Mantellid Frog Tadpoles (Guibemantis species) on leaf overhanging pond. Tadpoles escape by dropping into water. Association Mitsinjo Reserve, Andasibe, Madagascar....

John Beatty / 2020VISION / Helicopter dropping load onto moorland.

Stephen Dalton / Water droplet dropping onto water

Juan Carlos Munoz / Osprey {Pandion haliaetus} dropping down into water to catch fish, Finland

Inaki Relanzon / Dense smoke surrounds aeroplane dropping water / fire retardant on forest fire, Coll de Lilla, Tarragon, Spain, April 2004

Morley Read / Timelapse of a King swallowtail (Papilio thoas) butterfly caterpillar drinking water from the surface of a leaf, ), showing bird dropping camouflage, Napo Province, Ecuadorian Amazon. (non-ex)

Morley Read / King swallowtail (Papilio thoas) butterfly caterpillar, showing bird dropping camouflage, Napo Province, Ecuadorian Amazon. (non-ex)

Jabruson Motion / Infant Sumatran orangutan (Pongo abelii) separated from mother and isolated in tree for capture, breaks a branch to drop on the immobilisation team, part of a relocation programme, Sei Serdang, Prima,...

Jabruson Motion / Infant Sumatran orangutan (Pongo abelii) separated from mother and isolated in tree for capture, holding a branch and waving it at conservation workers below, part of a relocation programme, Sei Serda...

Jabruson Motion / Infant Sumatran orangutan (Pongo abelii) separated from mother and isolated in tree for capture, holding a branch and waving it at conservation workers below, part of a relocation programme, Sei Serda...