Delphinus delphis is listed in the UK Biodiversity Action Plan list of Species of Conservation Concern (Biodiversity Steering Group, 1995; Anon, 1999 (e) ). All species of cetaceans are given protection under the Wildlife and Countryside Act 1981 and the Wildlife (Northern Ireland) Order 1985. All cetacean species are listed on Annex A of EU Council Regulation 338/97 and therefore treated by the EU as if they are on CITES Appendix I thus prohibiting their commercial trade. The common dolphin is listed in Annex II and IV (Animal and Plant Species of Community Interest in Need of Strict Protection) of the EC Habitats Directive. Under Annex IV the keeping, sale or exchange of the species is banned, as well as deliberate capture, killing or disturbance. The Directive requires that member states monitor the incidental capture and killing of all dolphins. An 'Agreement on the Conservation of Small Cetaceans in the Baltic and North Seas' (ASCOBANS), formulated in 1992, has now been signed by seven European countries, including the UK. The Agreement makes provision for protection of specific areas, monitoring, research, information exchange, pollution control and heightening public awareness. The Bonn Convention includes North and Baltic Sea populations of common dolphin on Appendix II.A report on dolphins in the south west of England (Marine Connection & Wildlife Trusts, 2007) informs of large increases in sightings of Delphinus delphis since 2000, with a peak from December to February.
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