International Black Sea Action Day
October 31 · Level 6 · #1108 of 2238

International Black Sea Action Day highlights the need to protect a sea shared by several countries. Pollution, river health and coastal wildlife all call for cooperation: water carries the effects of human activity across national borders.
How it is celebrated: environmental groups, schools and museums organise beach clean-ups, exhibitions and educational activities. Researchers share findings about marine conditions, while local campaigns explain how to keep rubbish out of the water.
The Black Sea's deep waters contain hydrogen sulphide and almost no oxygen. Fish and most familiar marine animals therefore live in the oxygenated upper waters.