Located just minutes away from Koror dive centres, Helmet Wreck is a treasure trove of war materials and ship artefacts. This Japanese coaster was sunk during WWII. The stern rests at about 15m, while the bow is at 33m. It takes its name from the stacks of helmets you'll see in the aft hold; they are now cemented together after decades of underwater corrosion. Other notable features include rifles, ammunition boxes, drums, pans, bottles, electrical parts and a few gas masks.