-

4100
World Nature Conservation Day
-

4106
Sea Otter Awareness Week
-

4111
Spine-cheeked anemonefish in Milne Bay, Papua New Guinea
-

4122
Badlands National Park in South Dakota
-

4142
European fallow deer in England
-

4147
Greater flamingos, Lüderitz, Namibia
-

4164
Hungarian Parliament Building, Budapest, Hungary
-

4165
A keel-billed toucan in Costa Rica
-

4167
Glen Brittle, Isle of Skye, Scotland
-

4173
Merced River, Yosemite National Park, California
-

4181
Asteroid Day
-

4184
Moon Day
-

4188
World Environment Day
-

4190
Hen Galan
-

4199
Independence Day of the Argentine Republic
-

4201
World Oceans Day
-

4205
Gdańsk on the banks of the Motława, Poland
-

4207
Dunquin Pier, County Kerry, Ireland
-

4214
Hay bales in North Yorkshire, England
-

4218
Anshun Bridge, Chengdu, China
-

4224
International Day for the Conservation of the Mangrove Ecosystem
-

4236
J.R.R. Tolkien Day
-

4248
Cable car station, Graubünden, Switzerland
-

4279
National Lighthouse Day
-

4291
A great white egret in Hungary
-

4301
Three Musketeers Falls at Iguazú Falls, Argentina
-

4312
Tide pools in La Jolla, California
-

4314
Iceland for International Rock Day
-

4321
Shark Awareness Day
-

4321
National Moth Week