Nets such as this one, will wrap around dolphins and other
marine animals. Nets and plastic substances can cause death and injuries to animals
because they may mistake it for food and then choke on the plastics.
Source of photo: http://www.google.com/imgres?q=Nets+wrapped+around+dolphins
3 facts about plastic pollution in the ocean:
1- Marine debris, particularly debris that is composed of lost or abandoned
fishing gear, is recognized as a serious threat to marine life,
vessels, and coral reefs.
2- Fishing gear is a hazard to fish, marine mammals, turtles, sea birds, coral reefs, and even human activities.
3- During aerial surveys, we observed over 1800 individual pieces of debris, including 122 derelict fishing nets.
source: http://www.5gyres.org