For recreational fishing in Swedish rivers that flow into the sea, what is the main purpose of the fishing regulations, and which authority is responsible for issuing them? Please provide the name of the authority and the specific regulation reference.
Navigate to 'svenskafiskeregler.se'. Accept any cookie consent banners if present. Navigate to the 'Fiske i vattendrag' (Fishing in watercourses) page. On the 'Fiske i vattendrag' page, identify the main purpose of the regulations for fishing in watercourses emptying into the sea. Identify the regulatory authority and their specific regulation reference responsible for these regulations. State the main purpose and the regulatory authority with its regulation reference.
State that the main purpose of the regulations for fishing in watercourses emptying into the sea is primarily to regulate fishing for migratory species such as salmon, trout, and eel. State that the primary regulatory authority for these regulations is Havs- och vattenmyndigheten (Swedish Agency for Marine and Water Management) and their regulations (FIFS 2004:37).