Are there black holes in the ocean?
A black hole is a region of spacetime where gravity is so strong that nothing, not even light can escape.
“But at a critical distance, a light beam no longer spirals into the black hole. Rather, it dramatically bends and comes back to its original position, forming a circular orbit.”
Professors Haller and Beron-Vera discovered similar closed barriers around select ocean eddies where fluid particles move around in closed loops. And as in a black hole, nothing can escape from the inside of these loops, not even water.
Because black-hole-type ocean eddies are stable, they function in the same way as a transportation vehicle—not only for micro-organisms such as plankton or foreign bodies like plastic waste or oil, but also for water with a heat and salt content that can differ from the surrounding water.
This could potentially help with ocean pollution and to offset the effects of melting sea ice.
https://www.sciencedaily.com/releases/2013/09/130923114111.htm