Ingo Arndt / Fan Coral (Echinogorgia sp) from Indo-Pacific, in collection at Senckenberg Museum, Frankfurt, Germany.

Jack Dykinga / Notch-leaf scorpion-weed (Phacelia crenulata) blooming around Desert agave (Agave desertii) in Glorieta Canyon, Anza-Borrego State Park, California, USA, March 2017. These plants are flowering during...

Claudio Contreras / Texas horned lizard (Phrynosoma cornutum) portrait, Laredo Borderlands, Texas, USA. April

Alex Mustard / Backlit detail of branching fire coral (Millepora alcicornis) showing the hair like polyps, filled with stinging nematocysts. East End, Grand Cayman, Cayman Islands. Caribbean Sea.

Cyril Ruoso / Verreaux's sifakas (Propithecus verreauxi) in Madagascar ocotillo (Alluaudia procera) trees Berenty, Madagascar.

Cyril Ruoso / Tenrec (Echinops telfairi) walking across leaf litter, Berenty Reserve, Madagascar.

Jack Dykinga / Great horned owl (Bubo virginianus) chicks nesting in saguaro cactus (Carnegiea gigantea), near Oracle, Sonoran Desert, Arizona, USA, May.

Enrique Lopez-Tapia / Giant lobelia (Lobelia rhynchopetalum) plants in mist, Sanetti Plateau, Bale Mountains National Park. Ethiopia, November 2014

Enrique Lopez-Tapia / Giant lobelia (Lobelia rhynchopetalum), . Sanetti Plateau, Bale Mountains National Park. Ethiopia, November 2014

Enrique Lopez-Tapia / Giant lobelia (Lobelia rhynchopetalum) flower spikes in mist, Sanetti Plateau, Bale Mountains National Park. Ethiopia, November 2014

Jack Dykinga / Sunset light on twisted Saguaro cactus (Carnegiea gigantea) Sonoran Desert National Monument, Arizona, USA, April.

Ann & Steve Toon / Hedgehog (Erinaceus europaeus) curled up sleeping in autumn leaves, UK, June, captive.