Enrique Lopez-Tapia / Spiny tree trunk (Pachypodium sp) Berenty Reserve, Madagascar.

Enrique Lopez-Tapia / Close up of Sisal (Agave sisalana) Berenty, south Madagascar.

Olga Kamenskaya / Ice stalagmites / ice spikes formation, Lake Baikal, Siberia, Russia, March.

Franco Banfi,Franco Banfi / Ornate ghostpipefish, (Solenostomus paradoxus) Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean

Edwin Giesbers,Edwin Giesbers / Hedgehog (Erinaceus europaeus) one week old orphan at rescue centre, captive

Daniel Heuclin / Antsingy leaf chameleon (Brookesia perarmata) sitting on branch, Tsingy de Bemahara, Madagascar. Endangered species.

Daniel Heuclin / Antsingy leaf chameleon (Brookesia perarmata) sitting on branch, Tsingy de Bemahara, Madagascar. Endangered species.

Daniel Heuclin / Antsingy leaf chameleon (Brookesia perarmata) Tsingy de Bemahara, Madagascar. Endangered species.

Nigel Cattlin / Bristly oxtongue (Helminthotheca echioides). Chesil Beach, Dorset, England, UK. October.

Nigel Cattlin / Bristly oxtongue (Helminthotheca echioides) flowers on shingle. Chesil Beach, Dorset, England, UK. October.

Claudio Contreras / Harem cactus (Homalocephala polycephala), cloes up. El Tecolote volcano, El Pinacate Biosphere Reserve, northwest Mexico.

Tony Wu / Seven-lined prickleback (Ernogrammus zhirmunskii) egg, 2mm in diameter. Hokkaido, Japan. May.