
Diving with Mola Mola is one of those experiences that few sea creatures inspire. The massive size, the strange shape and slow and graceful movements, as well as a secretive life, make seeing one underwater a truly surreal experience.
For those going to Indonesia, Nusa Penida on the island of Bali is one of the best places to see Mola Mola. When the season is right, these big fish hang out on the deep areas of the reef and cleaning stations, especially Crystal Bay. With the dramatic underwater scenery, nutrient rich currents, cold deep waters, coral reefs, manta rays, and pelagic life, Nusa Penida is a great place for the experienced diver.
However, diving with Mola Mola isn’t just about jumping into the sea and hoping to come across one. Knowing the season, the water conditions, the dive sites, the required certification, the currents, the depth, the gear, the right diving ways, and the local conditions can all help improve your experience.
What is Mola Mola?
Mola Mola is otherwise known as the ocean sunfish. It is perhaps one of the most unique fish in the oceans and can be identified with its big round body, big dorsal and anal fins, and a characteristic flat and truncated back.
The species found in the waters around Bali belongs to the family of ocean sunfish and has been identified as Mola alexandrini by Sanctum Dive Indonesia in its locality. The animals grow incredibly big and weigh the biggest of all the bony fish species.
Unlike the other reef fishes, Mola Mola spends most of its time in the open ocean and travels even into deep cold waters. They can get down to hundreds of meters below the surface, which makes it impossible for the divers to follow them unless they dive deeper than that. Thus, meeting Mola Mola while diving is a great thrill.
They seem to be very slow because of their size and swimming style. However, they are very powerful animals capable of swimming great distances in the water.
Why Do Mola Mola Visit Nusa Penida?
Mola Mola usually prefer to stay in cold and deep waters. Certain seasons bring with them changes in water temperatures and other oceanographic factors surrounding Bali and Lombok Strait.
These circumstances are especially important during Mola Mola season in Bali. This cold water means that there are quite a lot of nutrients brought near the surface of the ocean making the marine environment unique.
Mola Mola is also famous for visiting cleaning stations. Here, the cleaner fish can feed off these animals’ parasites.
This provides a unique opportunity for divers to see the animal. The nature of Mola Mola is that they inhabit the deeper ocean most of the time.
According to Sanctum Dive Indonesia, The appearance of Mola Mola can largely be linked to both cooler waters and the presence of cleaning stations around Nusa Penida.
The timing of a dive to view the Mola Mola fish is important.
The Mola Mola season near Nusa Penida usually lasts from July to October, with August and September being the best months for it. Overall, this period may extend into November, but sightings depend on the conditions in the water, including temperature, currents, and depth.
Therefore, one cannot expect to see a sunfish just by being in Nusa Penida during the Mola Mola period.
The ocean is unpredictable, while the Mola Mola fish is a wild creature, not a tourist attraction.
This is something to keep in mind when booking a dive tour in order to see a Mola Mola fish. Any responsible diving company should never assure you of a meeting with a Mola Mola.
Instead, the goal is to dive during the season’s peak and have the right sites and conditions to make the meeting possible.
The water might also get considerably colder during the Mola Mola season.
Reasons for Crystal Bays Popularity in Mola Mola Diving
When it comes to talking about Mola Mola diving in Nusa Penida, Crystal Bay is a location that is very often mentioned.
Due to its well-established reputation among the divers as the place to see ocean sunfish at certain times of the year, Crystal Bay achieved international popularity.
The underwater conditions found there are such that they allow for both deep-water and reef formations typical for the Mola Mola sightings.
Crystal Bay is famous not only for the opportunity to see the sunfish. The underwater conditions of Crystal Bay itself are quite stunning and include coral reefs, reef fish, and clear waters in good conditions.
However, Crystal Bay should not be considered a simple shallow dive because it may involve diving to significant depth, in cold waters and under high currents.
That is why it matters to have the right training and experience and be able to maintain buoyancy.
The Suitability of Mola Mola Diving for Beginners
Mola Mola diving is generally more appropriate for those with some diving experience rather than for complete novices.
While a new scuba diver may have the basic qualification to dive, the condition of the site where Mola Molas are found can be considerably more challenging than a dive on a tranquil reef.
Depth is one of the factors that must be considered as well as water current. Unfortunately, cold water makes diving uncomfortable and increases the amount of air consumed by divers, while excitement may result in divers being too absorbed in watching the animal at the expense of their diving responsibility.
So, if you are a beginner who wants to see a Mola Mola, you shouldn’t give up on the chance of seeing them. What you need to do is to improve your diving skills. Taking additional training, accumulating dives that will help you get used to shifting currents.
What Does Diving with Mola Mola Feel Like?
Seeing a Mola Mola while diving is a wholly different experience than just an ordinary dive at the reef.
One may go deep down through relatively clear, blue waters while enjoying the reef and also the guide who is leading them down to the area where sunfish have already been seen. However, as the divers keep descending, they notice a drop in temperature, compared to the warmer waters above them, which may happen due to seasonal upwellings.
As everything seems fine, suddenly there could be a big shadow in the water.
At first glance, the Mola Mola appears to be motionless, while all its fins seem to be making movements at the same time.
The Chasing Mola Mola sensation.
Most divers find it hard to explain how an animal, appearing as small as the size of a human, instantly becomes huge.
The animal may pass by the divers, stop at the cleaning station or disappear into the depths of the waters.
However, unlike an aquarium encounter with other types of fish, in the case of the Mola Mola, there is no guarantee that the animal will stay.
To Encounter Mola Mola, What is the Required Depth?
Mola Mola is often found at various depths, but some notable encounters happen in deep waters near the island of Nusa Penida.
Sanctum Dive Indonesia
This is partly the reason why divers must be serious about their training and experience.
The deeper one goes; the more air is used and nitrogen-related effects become serious. Divers should monitor their no-decompression limits and ascent.
Thus, a dive computer is very useful for deep-sea diving with this fish. Gas management and good management of depth must also be effective.
One should never try to go lower than limits allowed by training or regulations simply to find Mola Mola.
Safety of diving is much more important than an encounter.
The Water Temperature during Mola Mola Season
One of the most shocking things for those who come scuba diving in Nusa Penida is how cold the water can be during the Mola Mola season.
Many people perceive Bali as a destination rich in warm tropical waters, but the water around Nusa Penida can be much cooler during times of seasonal upwelling.
As Sanctum Dive Indonesia points out, water temperatures at the areas experiencing upwelling can drop from typical tropical temperatures to around 20°C or even lower.
Sanctum Dive Indonesia
Therefore, a tropical wetsuit may not always be enough to stay warm.
Choosing the right wetsuit depends on the diver, the conditions, and their own tolerance to low temperatures, so it’s a good idea to talk to the operator about the necessary equipment before going for the trip.
Being cold underwater has negative effects on comfort and concentration.
Required Gear for an Encounter with the Mola Mola
Good equipment preparation is of extreme importance when diving in the deeper waters and strong currents.
Getting a well-fitting wetsuit is vital due to the possibility of encountering cold waters. A dive computer should be used to keep track of depth and duration. A surface marker buoy is an essential piece of safety gear, especially when diving among currents.
Moreover, depending on the location and standard operating procedures of the dive school, it is possible to find some other gear for dealing with currents.
Say Sanctum Dive Indonesia, a dive school which recommends a 5 mm wetsuit when diving during Mola Mola season, states that diving equipment should include a dive computer, a surface marker buoy, and some special gear that allows diving in currents.
Sanctum Dive Indonesia
When making a gear choice, the most important rule is to use gear which you understand and are trained to use underwater.
Dealing with Mola Mola is an amazing experience, but one should get ready to dive with the unknown equipment.
The Right Way to Interact with Mola Mola
Observing Mola Mola is thrilling, but divers need to realize that they are guests in the water.
If a Mola Mola swims away, divers should let it go. Pursuing the animal can lead to stress and cause it to swim away altogether.
Divers should also avoid touching a Mola Mola. Contact with the animal can damage the mucus that protects the fish skin.
One other thing to bear in mind is positioning. Divers should not block the path of the animal or prevent it from moving deeper into the sea.
Photography should be done respectfully. Instead of covering the fish with divers, cameras and lights, the goal is to observe the fish.
Sanctum Dive Indonesia suggests that divers should not approach closer than 3 to 5 meters, avoid contact with the fish and its mucus layer, not provide it with an escape route, and be careful with bubbles and strobe lights.
Sanctum Dive Indonesia.
Such responsible behavior of divers allows others to enjoy the meeting with the fish and minimize possible harm to the animal.
Photographing a Mola Mola can prove to be an outstanding experience during the diving expedition. Since the animal is relatively huge, wide-angle photography is generally much better than the use of a narrow field of view to capture its image.
Mola Mola images mostly show the size and dimensions of the fish as they incorporate divers or reef background.
Mola Mola and Manta Ray Diving in Nusa Penida
Many divers combine their Mola Mola trip with manta ray diving. Manta rays are one of Nusa Penida marine animals, and the island offers opportunities to encounter them at sites such as Manta Point and Manta Bay.
This combination makes Nusa Penida particularly attractive for divers who want to experience large pelagic animals during the same trip.
Mola Mola and manta rays are very different animals, and their behavior and preferred environments are different, but together they demonstrate the extraordinary diversity of the waters around the island.
A multi-dive itinerary can therefore give you the opportunity to explore different environments rather than relying entirely on one Mola Mola encounter.
Why Choose a Local Dive Operator?
When planning a Mola Mola dive, choosing the right dive operator is an important part of the trip.
Local operators understand the island’s dive sites, currents, tides and seasonal conditions. They can also make decisions based on the conditions of the day rather than relying only on general information.
Sanctum Dive Indonesia is based in Nusa Penida and offers daily diving trips around the island. Its listed dive sites include Crystal Bay, Manta Point, Toyapakeh, Ceningan Wall, Blue Corner, Blue Garden, Mangrove and several other sites. The company states that certified divers are guided at a maximum ratio of 1 guide to 4 divers on its standard two-dive trips.
Sanctum Dive Indonesia
Being based on Nusa Penida also means the dive team is already close to the local dive sites. This can be advantageous when planning dives around changing sea conditions and seasonal marine-life activity.
For a diver specifically interested in Mola Mola, the quality of the briefing and local knowledge can be just as important as the boat, equipment or location.
How Many Dives Should You Plan?
If Mola Mola is the main reason for your trip, doing more than one dive can increase your overall opportunity to encounter one.
Wildlife sightings are never guaranteed, so a single dive provides only one opportunity.
A multi-day itinerary gives you more chances to dive during different conditions and visit different sites. It also makes the trip less dependent on one particular day.
Sanctum Dive Indonesia offers multi-dive discounts for licensed divers, with discounts increasing for higher numbers of dives. Its current information also states that six dives can qualify for a complimentary ADIP Nitrox certification.
Sanctum Dive Indonesia
Nitrox can be useful for appropriately trained divers, but it should always be used within the limits of the diver’s certification, training, gas analysis and dive plan.
Why Nusa Penida Is a Must-Visit Spot for Every Diver in Indonesia
Indonesia is known as one of the premier diving destinations in the world, but Nusa Penida is special because of the unique opportunity.
The island contains amazing volcanic underwater formations, strong currents, nutrient filled waters, and an abundance of sea life.
A licensed diver has the possibility of seeing mantas, diving the reefs, and potentially seeing the unique Mola Mola.
The PADI organization classifies Nusa Penida as a year-round diving destination in conjunction with the time frame of July until October that you can find manta rays nearly year-round.
Planning Your Dive to Meet Mola Mola with Sanctum Dive Indonesia
The experienced divers wishing to try out Mola Mola at Nusa Penida can rely on Sanctum Dive Indonesia that provide licensed-diver tours, diving classes and knowledge of the dive sites of the island.
Sanctum Dive Indonesia’s current data states that Crystal Bay is one of the leading diving sites and Mola Mola can be seen in the period from July to October.
Final Conclusion
A dive with Mola Mola is not just a way to check an unusual species off of your travel experience. It is a chance to see one of the world’s most interesting underwater species in their natural habitat. The combination of cold deep water, amazing reef formations, seasonal currents and the possibility of encountering the giant Ocean Sunfish makes diving in Nusa Penida different from most other tropical diving sites.
For a qualified diver, careful planning will ensure the highest quality experience. The right time of year, knowledge of the local conditions, experience and qualifications that match the dive requirements, using the correct equipment and listening to your diving guide as well as the importance of the correct behavior underwater will all be important.








