A World War I-era warhead and a dead blacktip shark attached to a metal hook are just some of the things magnet fishers have retrieved around the U.S. since the hobby spiked in popularity following the advent of the coronavirus pandemic.
The hobby, which involves people throwing powerful magnets into waterways in search of treasure and trash, became an excuse for some to get fresh air and for others to start businesses catering to these hobbyists.
