Hey @jeremyjeremiah. This is indeed a very important topic you are writing about. My senior thesis is a proposed prototype for enzyme based water filters.
As for steemstem: You should use more sources. There is a lot of information out there and you made valid points, but you should support them with scientific sources. You also make very broad statements. It may be better if you elaborate a little bit (for example: why are the oceans not safe for fish anymore? What is the cause of harm? etc.). I am glad you tackled this topic though. Cheers!