-

419
World Otter Day
-

419
International Day of the Tropics
-

421
Brooklyn Bridge, New York City, United States
-

424
World Bee Day
-

425
Aerial view of land and ocean, Victoria, Australia
-

425
National Cousins Day
-

427
Arch and Milky Way, Alabama Hills, California, United States
-

428
Badlands National Park, South Dakota, United States
-

432
Mont-Saint‑Michel during high tide, Normandy, France
-

436
Hnausapollur crater lake, Fjallabak Nature Reserve, Iceland
-

437
World Bicycle Day
-

444
Fireflies glowing above a stream, Okayama Prefecture, Japan
-

445
World Oceans Day
-

445
Mallard duck
-

445
Rice fields at Sapa, Lào Cai, Vietnam
-

447
Pitigliano, Tuscany, Italy
-

451
Earth Day
-

451
Pollinator Week
-

454
Endangered Species Day
-

460
International Day for Biological Diversity
-

460
Snowy egret preening, Florida, United States
-

461
The glass dome of Galleria Vittorio Emanuele II, Milan, Italy
-

463
Natchez Trace Parkway, Mississippi, United States
-

464
1953 Mount Everest Expedition
-

466
Formentor Lighthouse, Mallorca, Balearic Islands, Spain
-

468
European Day of Parks
-

473
Vai, Crete, Greece
-

476
International Bat Appreciation Day
-

478
Hawksbill Mountain, Shenandoah National Park, United States
-

478
International Tea Day