Activists from Greenpeace Africa simulate nuclear pollution on the beach in Sea Point, Cape Town. The "clean up" crew, dressed in protective clothing, work to remove yellow barrels marked with a nuclear symbol. The simulated nuclear pollution disaster seeks to increase public awareness of nuclear risks. The activists are taking part in a global day of action. Activists in 19 countries protest against nuclear power in advance of the March 11 memorial for the Fukushima Daiichi disaster.