Established by a group of teachers in the 1970s, Project Oceanology has now developed into a fully fledged marine-science program. In summer months families are invited aboard various cruises, including lighthouse expeditions, oceanographic research cruises (mid-June to August) and seal watches (February to March). The science cruises are the highlight, with hands-on activities such as testing samples, trawling nets, recording data and navigation.

Project Oceanology has permission to bring visitors to New London Ledge Lighthouse, but these tours should be organized through the Custom House in New London.