Invasive species are coming. It’s like Aliens, at least for the affected species that it’s hurting. As interesting as floating objects may seem, they’re actually harmful.
“The dock, torn loose from a fishing port on the northern tip of Japan, was covered with 1.5 tons of seaweed, mussels, barnacles and even a few starfish. Volunteers scraped it all off, buried it above the high water line, and sterilized the top and sides of the dock with torches.” (Knoxnews – Invasive)