I like Miriam, she is a lady that gets it. Go there now and read her excellent post on the story behind the 6:1 ratio of plastic to plankton that is often touted in the media and why it is flawed.
“Though I admire Algalita’s work, the 6:1 plastic:plankton ratio is deeply flawed. Worse, it is flawed in a direction that undermines Algalita’s credibility: It may vastly underestimate plankton and overestimate plastic. Here’s why, based off the methodology published in Moore et al’s 2001 paper in Marine Pollution Bulletin.”