Prince Albert of Monaco warns of 'irreversible tragedies' against the oceans of the world with up to 500 'dead zones' (share this with your friends) Urgent action is needed to prevent "irreversible tragedies" in the world's oceans due to plastic pollution and climate change. Prince Albert II of Monaco said at a large conference that there are already 500 "dead zones". The Prince told the meeting of academics, senior officials and ministers in Edinburgh that the threats facing the oceans are becoming 'increasingly alarming' and that people have to stop believing that it is possible to do 'everything and anything' in them 'without effects'. His open warning was repeated by Peter Thomson, UN Special Envoy to the Ocean, who compared the situation with all the historic architecture in the capital of Scotland that was swept away by a massive earthquake. He said the world's oceans were in "deep, d...