Fig. 1

Location of study area: a Indonesia and Sulawesi with red dot and dashed lines indicating close-up area in B; b Diving sites (red dots) in Bunaken National Park (insert on the left side) and the islands visited (depicted on the right side)
Location of study area: a Indonesia and Sulawesi with red dot and dashed lines indicating close-up area in B; b Diving sites (red dots) in Bunaken National Park (insert on the left side) and the islands visited (depicted on the right side)