How do bristle worm live with hermit crabs?

Bristle worms and hermit crabs often coexist in marine environments, particularly in coral reefs and sandy substrates. Hermit crabs use empty shells for protection, while bristle worms typically inhabit the same areas, benefiting from the organic matter found around these habitats. While they do not have a symbiotic relationship, they can share resources and space without direct competition. However, caution is warranted, as some bristle worm species can be aggressive or harmful if they come into contact with hermit crabs.