Miravet on the Ebro River, Tarragona, Catalonia, Spain (© Eloi_Omella/Getty Images)

Sea otter floating in a kelp bed in Alaska Maritime National Wildlife Refuge (© Gerry Ellis/Minden Pictures)

Mona Vale Rockpool, Sydney, Australia (© jamenpercy/Getty Images)

Arlington National Cemetery in Virginia (© Dennis Govoni/Getty Images)

Butchart Gardens in Brentwood Bay, British Columbia, Canada (© 2009fotofriends/Shutterstock)

Jotunheimen National Park in Norway (© Marisa Estivill/Shutterstock)

A Julia butterfly on the nose of a yellow-spotted river turtle, Amazon Region, Ecuador (© Westend61/Getty Images)

Baobab trees at sunset, Avenue of the Baobabs, Madagascar (© Framalicious/Shutterstock)

Tea garden at Yangjiatang Village, Songyang County, China (© feng xu/Getty Images)

Honey bee on lavender flowers (© Anthony Brown/Alamy)