Life in Plastic - The impact of plastics in India
A very good site on the situation in India. Not sure how frequently it is updated though. Their article on the "plastic cow" is very distressing.
Credit and thanks for the b/w photos of the cow and bottles.

Greenpeace Website
Over the years, Greenpeace has documented a full range of environmental problems and their solutions

Ecology Center
Check out the articles on the adverse health effects of plastics.
Credit and thanks for the photo of the man eating plastic - quite a cute photo if I may say so myself!

Florida Marine Research Institute
Deals mainly with Marine Life and Sea Pollution, many beautiful photos.
Credit and thanks for the photo of the plastic found in the turtle's intestine.