Stonefish have venomous spines and settle on the reef, and rely on being still and camouflaged. Always wear reef shoes or fins when entering the water to avoid danger. Cone shells can cause death. Don't pick anything up that looks like a cone. Seek urgent medical advice if stung.
Fire coral can cause irritation on the hands if you touch it. Sea cucumbers fire sticky threads if you pick them up - and you will need to remove them and wash your hands if you do.
Bull Rays are timid, and generally lie on the bottom of the reef. They have a barb in their tail they can use if threatened.
Reef sharks are timid and harmless. Manta Rays have no barb.
There are four red lights at either end of the runway, and at the crossing point by reception. Don't cross, and leave the runway area if the lights are flashing.
fees/permits
There is a "marine park tax" of A$4.50/person/day, usually included in the airfare and accommodation price.
contact
An Internet terminal is in the reception building, a small fee applies to use it. A satellite phone is available in the departure lounge, operated by Telstra. It requires a Telstra Phonecard for operation, and these are on sale at the shop. There is no mobile cell phone reception on the island.