Researchers discovered plastic, glass, metal and paper waste at the bottom of the Calypso Deep, a 5,112m depression in the Ionian Sea about 60km west of Greece’s Peloponnese coast.. Plastic ...

The structure of the Calypso Deep—a trench nearly 20 kilometers long and about 5 kilometers wide with steep slopes, a flat bottom, and currents of around two centimeters per second—created ...

Scientists have captured photos of litter at the bottom of the Calypso Deep, a trench 16,771ft (5,112m) below the surface of the Ionian Sea.