BP is using two methods to stem the flow of oil into the Gulf of Mexico. Work has begun on a secondary well to draw off the gushing oil, but that could take weeks. In the meantime, the company is constructing a giant funnel to contain the leak.
The funnel will weigh 98 tonnes, and should, in theory, collect 85 per cent of the oil spilling into the sea. BP has never used this method at such a great depth, and they can not guarantee it will work.
The hood of the funnel is a forty foot iron box. It will be placed on top of the leak, channelling the oil to the surface, where it will be collected by a barge.
Despite the many miles of booms lying in the sea to stop the oil reaching land, it continues to spread, threatening coastlines in four US states.
Many commercial fisheries in the region are under threat from the spill, and the toll on wildlife living on the coastlines affected is particularly worrying for environmentalists.
There have been reports of dead sea turtles in Mississippi, an area that is home to five endangered species of the creature. BP has sent teams of clean-up workers to search beaches for more.