Scalloped Hammerhead Shark

Photo: Kris Mikael Krister · CC BY

Scalloped hammerheads pass through the outer reef in winter months, occasionally forming the loose aggregations of 10 to 30 individuals that this species is famous for in deeper water. They feed on squid and octopus concentrated along the wall base at depths below 30 metres, using their electroreceptive ampullae of Lorenzini to detect prey hidden in crevices. Sightings are unpredictable but most frequent in January and February when surface water temperatures drop and the sharks move closer to the Kerama shelf.