. >> you maybe cannot see the sign but it says chevron usa inc. >> chevron got permits to frack at least 11 offshore sites in 2013. the company told us that it's used fracking safely and efficiently, at its deepest wells. >> we're talking about fracking all along the louisiana coast. it's in shallow water near communities, its in deep water. some of the fracking was actually permitted in the mississippi canyon where the deepwater horizon accident was -- and it's in some of the most precious sensitive biological areas... >> mississippi canyon, that's where the dp spill happened? that's where they're fracking now? >> that's correct, >> how is it regulated? >> one of our key concerns is that offshore fracking has barely been regulated at all. what we've found was that the federal government was largely just rubber stamping permits. >> the center for biological diversity is suing federal regulators. >> it's an inherently dangerous technology. it contributes to air pollution, it contributes to water pollution. it can really impact wildlife, and also the coastal communities that live by these