A nice coral site in the middle section of the strait. Large barrel sponges, porites boulders and patches of halimeda algae in the shallows and large quantites of seafans further down the current exposed slope. Lace coral and tubastrea micrantha dominates the deeper parts of the slope. A few small caverns below 30m where white-tip reefsharks occationaly rests during the day. Pulau Abadi means immortal island, and is the name of the nearby island.