Bloodworms are found in various areas along the East Coast and some regions of Canada. The majority of bloodworms sold commercially are harvested in Maine.
Bloodworms are mainly used as bait for fishing but are also used an ingredient in aquarium food. Bloodworm harvesting is an important part of Maine's economy that generates millions of dollars annually. Bloodworm diggers harvest worms from mudflats when the tide is low. Bloodworms are harvested year-round.
Bloodworms appear red in color due to the paleness of their skin. Bloodworms have the ability to bite and may cause allergic reactions. Bloodworms are able to lay millions of eggs during a lifetime.