The Philippines was checking reports on Sunday that a new oil slick has formed near the site of the country's worst oil spill, which has wrecked havoc on the environment of a central island. According to the World Wildlife Fund for Nature in the Philippines (WWF), a satellite image it received from the Canadian space agency Radarsat showed a 16-square-kilometre slick in the Visayan Sea...The Visayan Sea is located northeast of Guimaras Island, 495 kilometres of Manila, which was badly hit by the oil spill caused by the sinking of an oil tanker carrying two million litres of bunker fuel on August 11. Petron Corporation, which chartered the tanker, said it has sent out boats and planes to the area to check on the new oil slick...The [first] oil slick has already affected 66 square kilometres of sea off Guimaras Island, 220 kilometres of coastline...More than 40,000 people, mostly fishermen who rely on the sea for their livelihood, have also been affected by the accident.