Ocean Sunfish

Ocean Sunfish

The ocean sunfish that can be seen in Bali is the one of the world's largest class of the length 3m or more. Now let's go to see the ocean sunfish!

Let's know the ocean sunfish


Ocean Sunfish

The ocean sunfish resembles a fish head with a tail. Its caudal fin is replaced by a rounded clavus, creating the body's distinct shape. The main body is flattened laterally, giving it a long oval shape when seen head-on. The pectoral fins are small and fan-shaped. However, the dorsal fin and the anal fin are lengthened, often making the fish as tall as it is long. Specimens up to 3.2 m (10.5 ft) in height have been recorded.

The ocean sunfish has an average length of 1.8 m (5.9 ft), and an average weight of 1,000 kg (2,200 lb), although individuals up to 3.3 m (10.8 ft) in length 4.2 m (14 ft) across the fins and weighing up to 2,300 kg (5,100lb) have been observed.

Range and behavior

Sunfish are pelagic and swim at depths of up to 600 m (2,000 ft). Contrary to the general perception that sunfish spend much of their time basking at the surface, research suggests that adult Mola mola* actually spend a large portion of their lives submerged at depths greater than 200 m (660 ft), occupying both the epipelagic and mesopelagic zones.
* Binomial name: Mola mola

Life cycle

Ocean Sunfish

Ocean sunfish may live up to ten years in captivity, but their lifespan in a natural habitat has not yet been determined. Their growth rate is also indeterminate. However, it is known that a young specimen at the Monterey Bay Aquarium increased in weight from 26 to 399 kg (57 to 880 lb) and reached a height of nearly 1.8 m (5.9 ft) in fifteen months.
Newly hatched sunfish larvae are only 2.5 mm (0.098 in) long. They grow to become fry, and those which survive grow many millions of times their original size before reaching adult proportions. Sunfish fry, with large pectoral fins, a tail fin and body spines uncharacteristic of adult sunfish, resemble miniature pufferfish, their close relatives. Young sunfish school for protection, but this behaviour is abandoned as they grow.

* It quoted it from WIKIPEDIA.

Season of the ocean sunfish

Generally, it is October from July. It often sees in the low water temperature region (16-26 degrees), and It is influenced by the tide and the filling lack of the moon.

When is it at that the probability of seeing is high?

But, it's not always the one that can be seen.

Encounter dive point

It's not because it is possible to see in all dive site. It's possible to see with a specific dive point. A common part of dive point that can be seen...


Very famous dive point "Crystal bay" (Nusa Penida)

Crystal Bay Point Map

It's at the point name "Crystal bay" that exists in Nusa Penida that the ocean sunfish is often witnessed in Bali. In the bay where the boat is made to moor, because there is comparatively calmly a current hardly, and either depth is shallow, the experience diving is a possible point. However, the ocean sunfish doesn't appear in this bay. The ocean sunfish appears in the drop-off that went out of the bay. This drop-off always generates the current, and has the thing that becomes sometimes a very intense current. Moreover, not only the right and left but also a up-current and down-current change into the direction of the current in each amount. Physical strength against the current to say nothing of the skill is also necessary because it dives from among such a current.

Necessary experience

  1. Log 50 dives or more
  2. Certificated Advanced Open Water Diver or more
  3. No blank for 6 months

Good point known to few diver "Tepekong and Mimpang" (Tepekong)

Necessary experience

  1. Log 100 dives or more
  2. Certificated Advanced Open Water Diver or more
  3. No blank for 1 month

Manners and equipment


Most ocean sunfishes are hovering at a certain depth. This is called "cleaning". When approaching the sunfish, he surprise and get away with breakneck speed.


Very cold water

It becomes diving at the low water temperature (about 16 to 24 degrees celsius). It's better to wear a wet suit of 5mm full suit or a semi-dry suit. In addition, Even better to use the inner wear, Hood, and gloves.

Please do not endure when can not stop trembling. Must tell it your buddy or your guide. You must go up. You take off a wet suit and wipe your wet body on the boat. And, wear dry clothes.


Please equip be sure to prevent the diving accident.

Photo gallery

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