Claudio Contreras / Californian sea lion (Zalophus californianus) swimming in Southern sea palm (Eisenia arborea) and Giant Kelp (Macrocystis pyrifera) forest, San Benitos Islands, Baja California Pacific Islands Biosphe...

Philippe Clement / Common tree frog (Hyla arborea) sitting on branch covered in lichen at night with full moon, La Brenne, France, May. Digital composite

Nature Production / Japanese tree frog (Hyla japonica) hanging from Pumpkin flower, Japan

Nature Production / Japanese tree frog (Hyla japonica) climbing up onto hydrangea leaf, Fukuoka, Japan, August, sequence 1/3

Solvin Zankl / European tree frog (Hyla arborea) on tree branch, with lake behind, Germany

Thomas Marent / European Tree Frog (Hyla arborea) calling, Switzerland

Stephen Dalton / Common european tree frog (Hyla arborea) leaping, multiflash sequence of two images

Stephen Dalton / Common tree frog (Hyla arborea) jumping, multiflash sequence of three images

Alan Watson / Frond pattern of tree ferns (Cyathea arborea) in lowland tropical rainforest at 420 metres, Loma Quita Espuela Scientific Reserve, Dominican Republic.

Alan Watson / Frond pattern of tree ferns (Cyathea arborea) in lowland tropical rainforest at 420 metres, Loma Quita Espuela Scientific Reserve, Dominican Republic.

Stephen Dalton / Common european tree frog {Hyla arborea} jumping sequence, multiflash image, controlled conditions, UK

Stephen Dalton / Common / European treefrog {Hyla arborea} jumping sequence, multiflash image, controlled conditions