AUSTRALIAThundercliff CaveWith fantastic warm clear water, untouched corals, endemic and hybrid fish, whalesharks and other pelagics appearing during the year, Christmas Island boasts some of the best scuba diving sites in Australia, so it is hard to choose only one site to dive before you die. “ Thundercliff Cave is one of the most incredible and popular dive sites on the island. Divers get dropped by boat into the clear water right in front of the cave, where they can descend to 30m for the first half of the dive, to marvel at the drop-off The island rises dramatically from the edge of the Java Trench, the Indian Ocean’s deepest point, and has 80km of spectacular drop-off diving, with most walls being only 20 metres from the shoreline. Dotted along the coast are numerous sea caves and overhangs that can be explored safely, by most divers.

Thundercliff Cave is one of the most incredible and popular dive sites on the island. Divers get dropped by boat into the clear water right in front of the cave, where they can descend to 30m for the first half of the dive, to marvel at the drop-off. On the ascent to the cave, the outstanding coral gardens in front could delay your final goal and entry to the cave, which is why you’d never get bored diving this site. The entrance and cave is large, and can fit a number of divers, hugging the side walls, looking for rare nudibranch, slipper lobster and frogfish. As the first chamber shallows, divers ascend to the surface and marvel at the stalactites. The name quickly becomes evident with the sound of the seas outside.

Descending to exit, the divers find an array of sponges, with small shrimps, crabs, eels and the iconic blue water exit. For those lucky divers at the right time of year, usually November to December, it’s possible to see the red crab migration up close - unlike any diving in the world.

Who to dive with
Extra Divers Christmas Island
www.extradivers.com.au
Who to dive with
Christmas Island Wet n Dry Adventures
www.divingchristmas.com
© CITAEssential informationLocation: Christmas Island, Australia
Depth: 30m
Diver level: Advanced