In Poland, magnet fishing is legal as there are no specific regulations prohibiting it... The legality of magnet fishing in 2024 in other countries depends on local laws:
In the United States, magnet fishing is generally permitted, except in South Carolina where it's illegal due to laws prohibiting the removal of artifacts from state waters.
In Indiana, from 2024, a permit is required for magnet fishing.
In other states, such as Alabama, magnet fishing is legal but requires obtaining permission on private properties.
In the UK and the US, there are specific regulations that can complicate magnet fishing, especially regarding the discovery and removal of historical artifacts.