It has been described as an ''environmental disaster". Some of Greece's most pristine beaches left blackened after a huge oil spill from a sunken tanker. The Aya Zoni II, a 45-year-old ship, sank under anchor near the island of Salamis on Sunday night. It was carrying around 2,500 tonnes of fuel, some of which quickly covered beaches and coves on the southeastern side of the island, opposite Athens and Piraeus port. The oil has now spread to suburbs in the capital.