This striking false-color satellite image shows masses of organic material swirling along the Polish coastline. When the photo was taken, the composition of these giant swirls was unknown ...

To stand at the edge of an ocean is to face an eternity of waves and water ... In this little-seen world, swirling super-highway currents move warm water thousands of miles north and south ...

Importantly, the movement of ocean water can greatly affect how sound waves travel from one point to another. Mesoscale eddies are large, swirling ocean currents that are kilometers in diameter.