Michael Lueck & Brooke A. Porter 
Advancing Public and Industry Participation in Coastal and Marine Sciences [PDF ebook] 

This book introduces a range of citizen science approaches to the coastal and marine sciences, introducing a variety of case studies. It goes beyond the narrow definition of citizen science, and also includes the contributions to science provided by the wider tourism industry. Various methods are discussed, including traditional surveys, the use of social media and GPS tracking as sources for data, and citizen science contributions through online platforms and apps, as well as tour operator sighting logs.