Elasmobranchs (sharks, skates, rays) possess an extremely sensitive electrosensory system that enables them to detect electric fields in their environment. Elasmobranchs are able to detect weak bioelectric fields, which are emitted by marine organisms, and use them to locate prey, conspecifics, and potential predators. However, elasmobranchs are also sensitive to electric fields from anthropogenic sources, and interaction with them may cause negative behavioral responses. These effects are especially important in light of the growing marine renewable energy industry, which is associated with large networks of power transmission cables that emit electric fields.