. >> ali velshi on target only on al jazeera america he works for demoea, the national oceanic and atmospheric administration. noah has been trying to keep the islands in clean. >> there's a flux of plastic. >> hawaii's northern island act like a fine tooth comb, filtering debris from the north pacific gir, a system of currents pushing the pacific and everything in them in a clockwise circle, creating what many call the great pacific garbage patch, where shape of all shapes and sizes is dense. close to 90% of that garbage is plastic. >> these guys will eat plastic bags and pieces of plastic, thinking that it's food. it will be lodged in the intestinal tract, and worse is leaching chemically out of the plastic. impacting the guys. >> jeff works with anfalse, affected by plastics at the sea life park. >> if we don't do something, and can't treat our environment better, it will have an impact, and this guy will be gone. snoop this plastic problem is not always evident. at first glance, the beautiful beach my appear untouched. until you dig in and take a closer look. sift the sand and you find tin