Aerial and snorkelling census techniques for estimating green turtle abundance on foraging areas: A pilot study in Mayotte Island (Indian Ocean)David Roos, Dominique Pelletier, Stéphane Ciccione, Marc Taquet and George HughesAquat. Living Resour., 18 2 (2005) 193-198DOI: https://doi.org/10.1051/alr:2005021