Jack Dykinga / Saguaro Cactus (Carnegiea gigantea) with flower cluster emerging from the tip of its limb, Saguaro National Park, Arizona, USA.

Erlend Haarberg / Herb-paris (Paris quadrifolia), Norway, June.

David Pattyn / Black necked grebe (Podiceps nigricollis) adult spreading its wings during the courtship dance. This bird is waiting for the submerged partner to emerge from the water and perform a dance in front. Th...

Willem Kolvoort / White waterlily (Nymphaea alba) in Naardermeer bog lake, Holland. May.

Enrique Lopez-Tapia / Plant (Xanthostemon auriantalun) Parc Provincial de la Rivire Bleue / Blue River Provincial Park, New Caledonia. Endemic.

Chris Mattison / Dandelion (Taraxacum officinale) seedhead, focus stacked image.

Pascal Kobeh / Female Humpback whale (Megaptera novaeangliae) with its calf in open water, Reunion Island. Indian Ocean.

Clay Bolt / Rough Green Snake (Opheodrys aestivus) in undergrowth, Southern Appalachians, South Carolina, USA, North America, June.

Alex Mustard / Reticulate stargazer (Uranoscopus sp.) emerging from the sand. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Will Burrard-Lucas / Big-headed mole rat (Tachyoryctes macrocephalus) appearing from its hole, Bale Mountains National Park, Ethiopia. Taken with remote camera.

Jabruson / Mass emergence of rainforest Skipper butterflies (Melphina sp.) Lokoue Bai, Odzala-Kokoua National Park, Cuvette, Democratic Republic of Congo.

Peter Cairns / Wood patterns in Lodgepole pine (Pinus contorta) Yellowstone National Park, Wyoming, USA, January.