Seagrass-Watch Magazine Issue 47 - March 2013 | Page 35

tankers, and general cargo ships. The Torres Strait region has a high rate of shipping incidents compared to other shipping passages. There are at least 20 separate accidents recorded back to 1970, 18 of which were ship groundings on reefs(2). Of these 20 accidents, four caused large quantities of oil and fuel to be spilt into the sea(4). The most recent incident occurred in February 2009, where a products tanker grounded on a small reef. There was no damage to the ship and no spill of pollutants, however, there was damage to the reef flat and associated habitats(4). Shipping accidents in Torres Strait also pose a serious risk to commercial and indigenous fishing. Commercial fishing is one of the most economically important activities in the Torres Strait and provides a significant opportunity for financial independence for community fishers. As traditional inhabitants of the Torres Strait, the people are able to fish for both commercial and non-commercial fish species. There are a large number of commercial fisheries operating in the region including the Torres Strait prawn, tropical rock lobster, trochus, finfish and beche-de-mer fisheries. The Torres Strait prawn fishery is the most valuable commercial fishery with 6,722 tonnes of product taken in the 2008-2009 fishing season valued in excess of AUS$73 million(6). The extensive seagrass habitats located around the GNE and PoW channels provide vital nursery habitats for juvenile prawns associated with the fishery. For the indigenous people of Torres Strait, dugong and turtle are the most significant and highest ranked marine food source in the traditional subsistence economy(7,8). The Torres Strait contains the largest population of dugongs in the world(9) and seagrasses are the primary food source for dugong and turtle. Therefore, the constant threat of shipping accidents and oil spills is of great concern to the local communities. Despite the GNE and PoW Shipping Channels being high risk channels to marine habitats, the vast area of the region (48,000km2) coupled with the low local population (and resources) me