Manta rays have unique patterns of spots on their bellies, allowing individuals to be identified. University of Queensland researchers have created a database of more than 1300 manta rays, supported by a citizen-science project. Scientists are able to keep track of the movements and health of reef manta rays (Mobula alfredi) via photographs and videos submitted by members of the public. More than 7000 sightings have been recorded, showing that manta rays can travel up to 1000 kilometres at a time. The data will inform conservation projects and reef management.