Magnet

The Magnet is an offshore underwater pinnacle in Belongas Bay, South Lombok, Indonesia, rising from 80 metres depth to just below the surface and exposed directly to the open Indian Ocean. Its name reflects its function: the massive currents sweeping in from the Indian Ocean carry nutrient-rich water that draws concentrations of pelagic life to the pinnacle, making it one of the most sought-after shark dives in Indonesia. The site is reached by boat in approximately 30 minutes.

The pinnacle's terrain is dramatic, climbing from a maximum depth of 80 metres to just beneath the wave-swept surface, where crashing waves and powerful surges can be felt as deep as 15 metres. Divers typically make a negative entry to descend quickly to 20–25 metres, where pelagic activity is concentrated. When conditions allow, the full pinnacle can be explored, including a cave at around 20 metres where white-tip reef sharks regularly rest. Visibility ranges between 10 and 20 metres depending on sea conditions and seasonal currents.

The Magnet is best known for large aggregations of Scalloped Hammerhead Sharks and Great Hammerheads, with peak encounters running from July to October when cooler water draws them to shallower depths; June through early November is the broader window for hammerhead sightings. Schools of tuna, barracuda, and mackerel circle the pinnacle, alongside frequent white-tip and black-tip reef sharks. September is noted for mobula rays and eagle rays. Water temperature ranges from 23–30°C depending on the season.