Bisphenol A in all the oceans?

According to a UN study, one square mile of ocean contains 46 thousand pieces of plastic.  Now, according to a new report, all the oceans contain traces of BPA (Bisphenol A).  Wired:

BPA can cause reproductive disorders in shellfish and crustaceans, and doses below a single part per trillion can have cell-level effects, but the path from water and sand to ocean animals needs to be studied.