sentences:  These organizations fight for many causes including stopping pollution, overfishing, whaling and by-catching, and supporting marine protected areas.Though the environmental movement began in the United States during the 1960s, the idea of marine conservation really did not take off in the country until the 1972 Marine Protection, Research, and Sanctuaries Act (MPRSA) passed, beginning the movement.The act allowed the regulation by the United States Environmental Protection Agency (EPA) over dumping in the seas.