National Wildlife Magazine's 35th Annual Photography competition. [via Fark]
Norman Koren - photographs and tutorials
PictureHistory - a source of American historical photographs
The Official George & Ira Gershwin Web Site
Overshadowed - images by Keith Kin Yan
Cumulonimbus Mammatus - interesting looking clouds
CG Challenges - the largest online art contests of their kind, where artists are challenged to create outstanding artworks based upon set themes, while working under restrictions. For CG students, an additional bonus is the view of the creation process.
Chromasia - a photo blog
Nature Photographers - an online resource dedicated to the art and technique of nature, wildlife and landscape photography.
Abstrakt: the photography of frank lemire.