Magnet fishing, also called magnetic fishing, is searching in outdoor waters for ferromagnetic objects available to pull with a strong neodymium magnet.
A bolt cutter collected through magnet fishing in the Scarpe at Lallaing, France
A neodymium magnet used for magnet fishing
Typical magnet fishing equipment, including protective gloves, a bucket for storing catches, antibacterial hand gel, and a neodymium magnet attached to a rope.
Street sign pulled out of the Jizera in Svijany, Czech Republic, with the magnet used to retrieve it still attached to the signpost.
A mudlark is someone who scavenges the banks and shores of rivers for items of value, a term used especially to describe those who scavenged this way in London during the late 18th and 19th centuries.
Magnet fishing
…Metal detector – Electronic instrument which detects the presence of metal nearby Mudlark – Someone who scavenges for items of value on the shores of rivers Rag-and-bone man – Traditional name for some income-seekers…
Mudlarks of Victorian London (The Headington Magazine, 1871)
A buckle found by a member of the Thames Discovery Programme on the Thames foreshore at the Tower of London
Fragments of pottery found while mudlarking on the River Thames in central London