So, here's the story according to a dive professional in Bali, and who knows the two instructors involved in the incident. Bear in mind that this is just what came out on Facebook; I know none of the divers involved, nor was I there when it happened. The instructor telling the following version is also only a friend of a friend but he confirmed the story as it was written.
On Friday Feb 14, seven female divers (two instructors-guides, five guests) departed Sanur for Nusa Penida. The two Japanese dive guides are experienced, and have been guiding dives in Bali for over seven years. They were on a boat operated by Ocean Express, a Nusa Dua-based boat. It was cloudy in the morning, but generally the weather was OK for diving, and they were NOT the only divers/boat departing for Nusa Penida that day.
Around 1PM, they descended at the dive site (The Mangrove, off Nusa Lembongan). At this point in time, it was cloudy, but diveable. One of the divers drifted and got separated from the group, and the current picked up, so the remaining divers aborted the dive and surfaced. On the surface, they found that the wind had picked up, causing high waves, and heavy rain was pouring down, reducing surface visibility to about 15m. They could not locate the diver who got separated, nor the boat. They stayed together, pounded by waves and surface current, and drifted towards Nusa Penida. (It is unclear how long they drifted). At some point they reached the cliffs near Manta Point (a dive site off Nusa Penida), managed to grab hold of the rocks and helped each other up the cliffs. At this point, the waves were about 3-meter high, and one diver slipped from grasp and could not reach the rocks.
What happened to the boat?
The boat was anchored before dropping off the divers. A little after the divers descended, it started to rain heavily, so the boat started searching for the divers about 40 minutes after they descended, until it was low on fuel. So the boat left the site to Nusa Lembongan TO REFUEL. The crew has grossly miscalculated the fuel needed for the day, and were forced to buy fuel from islanders. This is NOT a common practice, in the 100 or so dives I've done in Nusa Penida, never had I ever been on a dive boat that ran out of fuel, or left the site while I was diving. The dive boat then returned to the site to look for the divers. The crew was unable to locate the divers, and continued to search on its own. Only at 6PM (!!!) that night they reported the divers as missing. Bear in mind, there were numerous dive boats nearby, who could have assisted with the search had they known there were divers missing.
On Saturday and Sunday, the Search and Rescue boats and helicopter conducted searches around Nusa Penida. On Saturday, the search was aborted early due to bad weather. On Sunday and Monday, the entire dive community in Sanur pitched in and deployed private boats to help search for the missing divers. The Japanese dive community in Bali even went so far as to raise money to charter a helicopter for the search.
On Monday Feb 17, at about 3.30PM, one of the private dive boats spotted the divers in Manta Point, and rescued five of them. One of the instructors was among those rescued.
At this time, two of the divers are still missing. The rescue effort continues, both officially and privately organized. Let's all send them positive thoughts and prayers, and hope for the best outcome possible.