Economy of Devon of the railways in the 19th century, Devon's economy has been heavily reliant on tourism. The county's economy has followed the declining trend of British seaside resorts since the mid 20th century, with some recent revival. This revival has been aided by the designation of much of Devon's countryside and coastline as the Dartmoor and Exmoor national parks, and the Jurassic Coast and Cornwall and West Devon Mining Landscape World Heritage Sites. In 2004 the county's tourist revenue was £1.2 billion. The Met Office is in Exeter as is Connaught plc, and Pennon Group, the water company. The Wrigley Company
UNESCO Convention on the Protection of the Underwater Cultural Heritage sites have now disappeared without any trace. Due to the sheer mass of the world's oceans and the inability to monitor all activity that takes place therein, pirates and underwater thieves continue to pose a significant threat to the preservation of cultural heritage and cultural property. In 2006, the UNESCO convention was ratified by an additional state, Portugal, needing international protection for the looting of its underwater cultural heritage sites. At least six international treasure hunting organizations had established themselves off the coasts of Portugal to reap the benefits of the nation's coastline after new legislation had allowed for the