Thousands of Vietnamese pot-bellied pigs snorting and squealing way across Puerto Rico in what many fear unstoppable quest to eat and reproduce. They forage through gardens and farms knock over trash cans and leave pungent trails of urine and excrement stopping occasionally to bathe.
This is the best tl;dr I could make, original reduced by 88%. (I’m a bot)
This spot was once a clam garden, an ancient indigenous form of mariculture that coastal First Nations people have used for millennia.
For millennia pre-colonization, clam gardens epitomized sustainable food security for Pacific north-western coastal nations from northern Washington to south-eastern Alaska.
Modern studies have found that clam gardens have historically been up to 300% more productive than unmodified beaches, that their clams grew larger and faster than average, and that the clams did not exhibit any signs of resource stress from over-harvesting.