You may not know it but on our biosphere - Earth - there is also a relatively unknown world hiding in plain sight. It is composed of microbes that live on floating pieces of plastic floating on the ocean.
This "Plastisphere" of microbial organisms living on ocean plastic that was first discovered last year and it is now getting studied.
When researchers first examined the Plastisphere, they found at least 1,000 different types of microbes living on the tiny plastic islands, and worried that they might pose a risk to larger animals, including invertebrates and humans. They also found that the Plastisphere's inhabitants included bacteria known to cause diseases in animals and humans. Since then, researchers have been trying to figure out why these potentially dangerous bacteria live on the Plastisphere, how they got there and how they are affecting the surrounding ocean.