My first thought as well that it's a massive underestimate. I live on a fishing island in Iceland (Commercial fishing, not quaint little boats like some people

My first thought as well that it's a massive underestimate. I live on a fishing island in Iceland (Commercial fishing, not quaint little boats like some people imagine) and there are piles of nets everywhere the size of houses, a factory that does nothing but make new plastic nets 2 shifts a day, and we can remove several large black garbage bags worth of fishing junk a day from just a few of the beaches surrounding just our 3km across island.