Chris & Monique Fallows / Great white shark (Carcharodon carcharias) cruising on the surface at sunset, Dyer Island, Gansbaai, South Africa

Jeff Rotman / Great White shark (Carcharodon carcharias) surfacing with head and dorsal fin visible, Dyer Island, South Africa, Atlantic Ocean.

Jeff Rotman / Great White Shark (Carcharodon carcharias) surfacing with mouth open, Dyer Island, South Africa, Atlantic Ocean.

Jeff Rotman / Great White shark (Carcharodon carcharias) surfacing with mouth open, Dyer Island, South Africa, Atlantic Ocean.

Peter Scoones / Great white shark {Carcharodon carcharias} Dyer island, South Africa

Doug Perrine / Great white shark portrait {Carcharodon carcharias} Dyer Island, Gansbaai, South Africa (Non-ex).

Doug Perrine / Great white shark {Carcharodon carcharias} Dyer Island, Gansbaai, South Africa (Non-ex).

David Kjaer / Dyer's Mazegill (Phaeolus schweinitzii) Hampshire, England, UK, September.

David Kjaer / Dyer's mazegill (Phaeolus schweinitzii) Hampshire, England, UK, September.

Paul Harcourt Davies / Woad (Isatis tinctoria) growing with poppies. Campo Imperatore, Abruzzo, Italy, June ,

Paul Harcourt Davies / Woad (Isatis tinctoria) flowers, Campo Imperatore, Abruzzo, Italy June.

Colin Varndell / Weld flower (Reseda luteola) spikes. Portland, Dorset, UK June.