Sure, and I will send along one of the scientific papers used for that.
For example—let me just look it up—there was a paper by Ellis and colleagues in 2012 that was examining the discharge drilling waste from oil and gas and some of the problems that it has for benthic communities. It showed there is an effect that's seen up to six kilometres from the actual drilling site, just from the regular discharge drilling waste as part of the oil and gas process. There's a big concern that a lot of these oil and gas activities are going to have impacts beyond just where the actual drilling rig is, affecting the marine communities around them, especially the benthic, the communities on the bottom of the seabed.
I will send that paper along so that you can take a look.