Rock Islands dive sites

While Blue Corner is famous for its shark and pelagic action in strong currents requiring reef hooks, Big Dropoff offers a fundamentally different experience focused on wall architecture and soft coral beauty. Big Dropoff is generally considered Palau's most photogenic dive site, with its dense coverage of vivid soft corals providing a visual spectacle unmatched at Blue Corner. The current at Big Dropoff is typically milder, and the dive profile follows the wall vertically rather than holding position at a single point. Many divers rate Big Dropoff as their favourite Palau dive for the overall sensory experience.

The most spectacular section of the wall is between 5 and 30 metres, where the soft coral coverage is densest and the light penetration creates the most vivid colours. Many experienced photographers spend their entire dive between 8 and 20 metres, where the combination of natural light and coral density produces the best images. The wall continues to great depth, but below 30 metres the colours fade in the reduced light. The very shallow reef top at 1 to 3 metres offers an excellent safety stop with hard coral gardens and abundant small fish.

Big Dropoff is diveable year-round, but the best conditions are typically from October to May during the dry season. Visibility during this period regularly exceeds 30 metres and can reach 45 metres on exceptional days. The wet season from June to September brings more rainfall and reduced visibility, though the site remains excellent by any standard. Current strength varies with the tides rather than the season, so checking the tide tables for your visit dates helps predict conditions. Incoming tides generally bring the best visibility and most marine life activity along the wall.

Advanced Open Water certification is strongly recommended for Blue Corner due to the powerful currents and typical depths of 15-30 metres. Most dive operators require at least 50 logged dives. Divers use reef hooks to anchor themselves to the wall and watch the pelagic action, so familiarity with this technique or a briefing from your guide is essential.

A reef hook is a short line with a metal hook on one end and a clip for your BCD on the other. At Blue Corner, currents can be very strong, so divers hook into a crevice in the reef and inflate their BCD slightly to float like a flag in the current. This allows you to watch the shark and pelagic action hands-free without fighting the flow or damaging coral.