Operating a large commercial fishing boat is expensive, and lobster fishermen can only afford to check their sunken traps every three or four days. So Vince Stuart, a Nova Scotian inventor, created the Bait Savour which releases extra bait in the interim, increasing their haul.
If you think fishermen go out of the river with a woven creel and a corncob pipe... well, you're probably right. But they have the gear jones too! Modern fly fishing kit is as teched-out as any other sport's.
These are fake worms, or at least I think they are. Somebody laced these fake worms with magnets to make them act much more wormy (read: creepy) than real worms do.