Peleliu

Peleliu — Palau

Peleliu is the southernmost inhabited island of Palau's main island group — historically significant as the site of one of the Pacific War's bloodiest battles (the Battle of Peleliu, September–November 1944) and, for divers, the location of what many Palauan operators consider the most advanced and most rewarding pelagic diving in the archipelago.

The Corner

Peleliu Corner (also called Peleliu Cut or Peleliu Express) is a channel on the island's southwestern reef edge where the Pacific Ocean drives through a passage into Palau's inner lagoon. The current here is not decorative. On spring tides it runs at 4–6 knots — fast enough that divers don't swim through it so much as ride it, streamlining their bodies and maintaining position only by using reef hooks or finger-holds on dead coral.

The reason to submit to the current: scalloped hammerheads stack in the channel mouth at 25–35 meters. Not the large schools of Cocos or the Galápagos, but regular groups of 5–20, present from April through June with reasonable consistency. Grey reef sharks are everywhere. Bull sharks have been documented in the deeper sections. Manta rays sweep through on the incoming tide.

The WWII Layer

The waters around Peleliu — and particularly the reefflats and shallows adjacent to the island — contain WWII debris: landing craft, aircraft parts, equipment, and the residue of an amphibious assault that involved 1,800 American deaths and over 10,000 Japanese. Specialist dive operators offer guided historical dives through the shallower material.

Getting There

Peleliu is 45 minutes by speedboat from Koror. Most operators run it as a full-day trip — two dives at the cut plus lunch — rather than a half-day. The distance and the current conditions mean it's typically the last site dived on a Palau trip rather than an introduction to the archipelago.

Practical Info

• Depth: 15–40m | Difficulty: Advanced — extreme current; depth; remote from Koror services
• Access: Day trips from Koror (45 min); depart early to catch the correct tidal window
• Best season: April–June for hammerheads; December–April for clearest water
• Marine life: Scalloped hammerheads, grey reef sharks, manta rays, bull sharks, WWII historical material in shallows