Category: (PA) Nylon rope
A.K.A. Polyamide (PA), Nylon line
Most people do not immediate think of nylon when they think about plastic pollution, but nylon is another of the wide variety of polymers made from petroleum, contributing to the plastics that pollute the ocean. In time, nylon degrades in sunlight to thin fibers and small particles, easily ingested by wildlife.
It comes in a wide variety of sizes (half to ¾-inch diameter being the most popular) and colors (orange, yellow, aqua and more).
Source
