Legislation measures
For passive aquaculture/fishing gear like cages, boxes, cords of regional production a national deposit system with all its modifications (single-use, re-use, multi-use) seems feasible. Under certain conditions also imported aquaculture gear can be integrated. Fish cages or transport boxes are often adapted to own needs by farmers and could be included in a multi-use system.
Regulations
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Relevant type of aquaculture:
Relevant sea basin:
Relevant stage: