As a recreational angler, I need to understand the regulations for fishing in rivers that flow into the sea in Sweden. Identify the primary authority responsible for these rules and their main purpose. Also, find and define the term 'handredskap' (hand-held gear) using the website's glossary.
Navigate to the section detailing regulations for fishing in watercourses (vattendrag). Identify the primary regulatory authority for fishing in watercourses emptying into the sea. Determine the main purpose of these regulations. Navigate to the 'Om Svenska fiskeregler och hjälpsidor' page. Locate and navigate to the 'Ordlista' (Glossary) section. Scroll through the glossary to find the definition for 'handredskap'. Extract the definition of 'handredskap'.
State that the primary regulatory authority for fishing in watercourses emptying into the sea is Havs- och vattenmyndigheten (Swedish Agency for Marine and Water Management) and their regulations (FIFS 2004:37). State that the main purpose of these regulations is primarily to regulate fishing for migratory species like salmon, trout, and eel. Provide the definition of 'handredskap' as: 'spö, pilk och liknande rörligt redskap som är utrustat med lina och högst tio krokar (typ av rörligt redskap)' (rod, jig, and similar movable gear that is equipped with a line and a maximum of ten hooks (type of movable gear)).