Tony Heald / African elephant (Loxodonta africana) at waterhole with Giraffe in the background, Etosha National Park, Namibia, August

Sue Daly / Eel Grass (Zostera marina) swaying in the current. Channel Islands, UK, May.

Sue Daly / Eel Grass (Zostera marina) swaying in the current. Channel Islands, UK, May.

Juergen Freund / Soft corals swaying in the reef current. North Raja Ampat, West Papua, Indonesia, February

Pete Cairns / Birch tree {Betula sp.} in autumn swaying in the breeze, Scotland, UK.

Gavin Hellier / Palm trees blowing in the wind, Mahe Island, Seychelles, Indian Ocean

Norbert Wu / Sea fans swaying in the current, Bahamas, Caribbean