A dark blue, almost black ocean
By Julia Pastor With the arrival of summer come the familiar scenes of beaches packed with parasols and children building sandcastles. Sailing boats gliding across the luminous blue of the seas and the more subdued hues of the oceans. The mirror of the planet’s marine waters, however, reflects back a far less evocative image: an entire ecosystem, from the coastline to the high seas, polluted by more than 150 million…

