A volunteer diver conducting an underwater visual census of marine life along a 50m transect line within the Reef Life Survey program. The Reef Life Survey program (http://reeflifesurvey.com/) is a volunteer network of highly trained divers, and is a product of the CERF Major Projects funding that facilitated a cost-effective citizen science contribution to inventory and monitoring of shallow water marine environments. The RLS program has been further facilitated within the NERP Hub, describing biodiversity patterns at a national and global scale, as well as providing critical baseline data from areas such as the new Coral Sea CMR, from Ashmore Reef, the Great Barrier Reef,and other Commonwealth CMR's such as the Cod Hole and Pimpernel Rock in NSW.