Disco scallops are scallops caught using an innovative and sustainable method that involves using LED lights to lure them into pots. This technique, discovered accidentally by scientists, is more environmentally friendly than traditional dredging because it doesn't damage the seabed or marine habitats. The name "disco" comes from the pots, which are illuminated, causing the scallops to be attracted to them, and the method is a more sustainable, high-quality alternative.