We used to call them swamps. Oil companies dumped sludge into them. Real estate developers excavated them ..and built pricey coastal communities like Marina Del Rey. Just north of there, surfers in Santa Monica began getting sick ..with symptoms ranging from skin rashes to heart attacks. I used to get ear infections. Investigators discovered high levels of toxins in the water ..both natural and man-made ..and began closing beaches for like months at a time. We don’t call them swamps any longer. They’re ‘estuaries’ ..and they serve a purpose .. filtering runoff before it goes into the ocean ..removing contaminants .. keeping the shoreline hospitable ..and the ocean sustainable (ask a fisherman). The Bolsa Chica wetlands is the only one remaining in Southern California that hasn’t been developed to the point where it’s lost all of that. A 40-year old feud between developers and environmentalists has kept it that way. Fanatical environmentalists. I’ll bet you there’s not one person surfing the nearby river jetty who hasn’t gotten sick.