Big Drop-Off has a vertical wall that stretches alongside Ngemelis Island. The wall deserves to be seen from all directions. It is possible to spot a big chain connected to a 2m/6ft steel sphere all the way from WWII that used to stop Japanese from coming to this channel. The end of the reef goes down to 274m/899ft. Sometimes a light current can occur.
When To Go Diving
Divers come to this dive site at all times of the year, even though there is a lot of rain in June and July. The average temperature of the air is 26-30C/79-86F and the average water temperature is 26-27C/79-81F.
What to see
The highlights of the Big Drop-Off are the sharks: gray reef, whitetips, and leopard sharks. The smaller species include square anthias, butterflyfish, parrotfish, and lionfish. The most difficult to notice are leaf fish, stonefish, and tiny, colorful nudibranchs.