Doug Perrine / Long-finned pilot whales (Globicephala melas), Straits of Gibraltar, North Atlantic Ocean.

Doug Perrine / Pantropical spotted dolphin (Stenella attenuata) porpoising out of a boat wake, South Kona, Hawaii.

Doug Perrine / Pantropical spotted dolphin (Stenella attenuata) jumping, South Kona, Hawaii ( the Big Island ), USA, Central Pacific Ocean

Doug Perrine / Pygmy killer whale (Feresa attenuata), South Kona, Hawaii.

Doug Perrine / Pygmy killer whale (Feresa attenuata), South Kona, Hawaii.

David Pike / Mute swan, (Cygnus olor) with cygnets, near Turf Locks, Exeter Canal, Devon, UK. May

Charlie Summers / Rocky mountain elk (Cervus elaphus nelsoni) bull bugling during rut. Rocky Mountain National Park, Colorado, USA. October.

Nick Upton / Wood-carving leafcutter bee (Megachile ligniseca) female in flight, carrying leaf to line brood cell in insect hotel. Wiltshire, England, UK. July.

Nick Upton / Red mason bee (Osmia rufa) female emerging from nest burrow in insect hotel after provisioning brood cells with pollen, completed nests sealed with mud. Wiltshire, England, UK. May.

Morley Read / Dwarf rainfrog (Pristimantis minimus) a very small species 12-16mm in length. Distribution restricted to the southwest slopes of the Cordillera del Condor, southern Ecuador. Rio Nangaritza, Ecuador.

Morley Read / Sarayacu treefrog (Dendropsophus sarayacuensis) male, calling, with partially inflated vocal sac. Yasuni National Park, Ecuador, August 2018.

Morley Read / Short-headed treefrog (Dendropsophus brevifrons) calling with inflated vocal sac. Above a rainforest pond at night, Yasuni National Park, Ecuador.