Dr Keirle also said more needed to be done to map and monitor the outflows, so the public had more information about where they are, if they are monitored and when and for how long sewage is flowingintothesea.
Anything substantially lower will indicate that oil is escaping through some broken piping and flowinginto other rock formations below thesea floor with the possibility that it could find a way to burst through the floor intothesea from a different location.