Dusky Grouper

Photo: Katerina Kalogerini · CC BY

Several large individuals — some exceeding 70 centimetres — hold territories at the base of the basalt columns where boulder piles create shelter. As protogynous hermaphrodites, the largest fish at Glaronissia are all male and represent decades of growth in a site with low fishing pressure. They are bold and will approach divers closely, making for outstanding wide-angle photography.