bioaccumulate into the larger organisms, but this is the basis of the food chain so if we're having toxic impacts there, then it does magnify -- not magnify but it does have effects throughout the food chain. >> when we look at the topography of the ocean floor, you have the continental shelf that comes out, then it drops down into that desoto canyon which gets you into the extremely deep water in the gulf. but right along that margin there where the continental shelf dips down into the deeper water, the shelf edge reef complex which is a spawning ground for a lot of commercial and recreational fish, the usf study said, "these findings, although preliminary, suggest that subsurface oil may be emerging on to the west florida shelf through the desoto canyon." this is not just restricted to the extremely deep water. there's enough welling. how widespread could this become? >> it depends how big those plumes are and how long they persist but that conrare belt