Seawater cascades over an ancient coral reef, Hang Rai, Vietnam (© Thang Tat Nguyen/Getty Images)

Celebrating Holi in Mathura, Uttar Pradesh, India (© Avishek Das/SOPA Images/LightRocket via Getty Images)

Silvereyes with cherry blossoms, South Korea (© TigerSeo/Getty Images)

Large anvil clouds above the Amazon in Brazil (© NASA)

Blue Spring, Te Waihou Walkway, New Zealand (© Ian Beattie/Alamy)

Bwindi Impenetrable National Forest, Uganda (© Art Wolfe/DanitaDelimont.com)

The Jefferson Memorial during the Cherry Blossom Festival, Washington, DC (© f11photo/Shutterstock)

Tree frog on leaf (© Tetsuya Tanooka/DEEPOL by plainpicture)

Elephant Rock, Al-Ula, Saudi Arabia (© Lubo Ivanko/Shutterstock)

St. Finian’s Bay, County Kerry, Ireland (© Atlantide Phototravel/Getty Images)