Sandra Bartocha / Scots pine (Pinus sylvestris) forest in spring, Muritz-National Park, Germany, May.

Floris van Breugel / Syncronous Fireflies (Photinus carolinus) illuminate the lush forests of Smoky Mountains National Park, Tennesse, USA, July

Enrique Lopez-Tapia / Tropical forest at lower level slopes of Mount Kilimanjaro volcano, Tanzania

Christophe Courteau / Aerial view of Okavango Delta, Botswana, Southern-Africa. End of rainy season, April.

Luiz Claudio Marigo / Jequitiba rosa tree (Cariniana legalis) Tableland Atlantic Rainforest of Vale Natural Reserve, municipality of Linhares, Esparito Santo State, Eastern Brazil, January 2012.

Luis Quinta / Waterfall in Laurisilva Forest, Madeira Island, April 2009.

Jouan & Rius / Palm trees (Licuala valida) in swamp forest, Lambir NP, Borneo, Sarawak, Malaysia

Jouan & Rius / View up through Palm trees in swamp forest, Borneo, Sarawak, Malaysia

Chien Lee / Lowland rainforest with sunrays cutting through mist, Cuc Phuong National Park, Ninh Binh, Vietnam

Pete Oxford / Essequibo River, Iwokrama Rainforest Reserve, Guyana

Tim Laman / A waterfall in the lowland rainforest of Borneo, with pool surrounded by ferns and other plants. Lambir Hills National Park, Sarawak, Malaysia.

Tim Laman / A waterfall in the lowland rainforest of Borneo, with pool surrounded by ferns and other plants. Lambir Hills National Park, Sarawak, Malaysia.