• Photo by Rantje Allen

  • Photo by William Tan

  • Photo by Rantje Allen

  • Photo by William Tan

  • Photo by Rantje Allen

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Category Archives: Marine Life

Healthy Coral Growth Evident in Gorontalo’s Reefs

Healthy coral growth is a notable characteristic of Gorontalo’s pristine reefs. Hard corals, known as scleractinians, dominate the marine environment here. Situated in the center of the Indo-Pacific’s Coral Triangle, Gorontalo displays highly diverse and dense corals.  

Diverse Acropora coral colonies

One genus of Gorontalo’s hard corals is Acropora. Acropora coral colonies can form tables or branches, depending on the species. In fact, there are over 140 species of Acropora.

healthy coral with polyps
Acropora with coral polyp tentacles protruding

Scleractinian corals are actually animals that live in a surrounding calcium structure. The animal is a a coral polyp. It is shaped like a tube with a single opening at one end. Tentacles usually ring this opening and function to gather plankton for food. Waste is expelled through the same opening. These tentacles can protrude or retract from the surrounding structure. Moreover, these tentacles gather passing plankton to eat. The embedded end of a coral polyp is connected to the entire coral colony via shared tissue and a nerve net. Moreover, all Acropora species are colonial.

Most Acropora species share a common distinction. The individual coral polyp is encased in a small tube that projects from the common substructure. This is true whether the Acropora forms a flat table or forms branches. Upon close inspection, divers can observe this distinction. However, determining the species of an Acropora colony requires microscopic analysis of its calcium skeleton.

Ringed in White

For the most part, the coloration of Acropora colonies comes from algae living inside the tissue of coal polyps. These algae are symbiotic. By process of photosynthesis, they convert sunlight into energy. This energy is more than the algae needs, so the surplus is passed to the coral polyp host. Scientists suspect that algae provides up to 98% of the nutrients health coral colonies need to survive.

Most divers know that rising ocean temperatures can cause the algae to vacate its coral host. If the algae does not return, within a matter of weeks the coral starves to death.

healthy coral
Acropora table corals with healthy white edges

Some divers are shocked to see Acropora colonies in Gorontalo ringed in white. They conclude that the coral is experiencing dangerous bleaching. However, this white edging is actually indicates rapid coral growth. In fact, the colony edges represent new coral growth. Algae has not yet had time to assimilate into the new coral polyps on the edge of the healthy coral colony.

Healthy Coral Environmental Conditions

Gorontalo Province is free from chemical producing factories. This means water contamination is very low. Also, frequent wave action creates high amounts of oxygenation. Located just north of the equator, Gorontalo enjoys an abundance of sunlight. All these elements are necessary for healthy coral growth.

Gorontalo’s health coral reefs are waiting for you to enjoy. So, please make your dive reservations directly with Miguel’s Diving.

Reticulated puffers delight divers in Gorontalo

Reticulated puffer is a clumsy, clownish swimmer that delights divers who chance to see it. This puffer lives throughout the Indo-Pacific tropics, including Gorontalo.

A Distinctive Network of Lines

reticulated puffer
Arothron reticularis in Gorontalo

The scientific name for this fish is Arothron reticularis, which is a fitting name. Reticulated means arranged like a net or marked like a network. Only the Reticulated puffer has the network of white lines around its face and belly. It sports white spots on its body. But so too does Arothron hispidus, another puffer species that lacks the network of lines. The body color for Arothron reticularis range from brown to grey.  

Puffer fish have quite distinctive bodies. This includes tough skin and a dental plate in their beak-like mouth. What they lack is more notable. They lack fin spines and ribs. As a result, they can inflate their stomachs with water when afraid. Moreover, their skin, gonads, and liver contain two toxins. These are tetrodotoxin and saxitoxin. Some species are more toxic than others. Because different puffer species have similar body shapes, identification is most accurate when using color patterns.

So, the reticulated pattern makes the Reticulated puffer easy to identify.

Facing a Reticulated Puffer

Typically, puffer fishes are occasional in the marine environment. However, Miguel’s Diving staff know of one dive site in Gorontalo where Reticulated puffers are likely to be seen. Moreover, this species of puffer fish also exhibits the ability to recognize humans. Certain puffers at that dive site swim right to our dive masters.  

reticulated puffer smiles
A Reticulated puffer smiles for the camera

The face of a Reticulated puffer makes a delightful photo. Besides showing the distinctive reticulated pattern, the eyes are especially beautiful. Encircled with white rings, the eyes have brown irises and dark pupils. The eyes have great range of motion. This puffer fish smiles for the camera with its four teeth plates. These continually grow. The fish will keep them worn down by eating shrimps and crustaceans. On the snout and between the eyes are twin, forked tuffs. These are actually olfactory organs that allow the fish to smell its watery environment.

Divers will notice that the body of this fish is often sprinkled with sand. During the day, puffer fish often hide in sandy bottoms. They use their pectoral fins to throw sand onto their backs. Their maximum length is 45 centimeters.

Proper Behavior for Divers

Divers should never catch or grab puffer fish to make them inflate. This action frightens the fish, causing stress. Like many puffer species, the Reticulated puffer is covered with defensive spines. These short prickles are only visible when the fish is puffed up in a defensive posture.

Although our Reticulated puffers know some of our dive staff, they do not like to be pursued with cameras. Instead, for guests who want a souvenir photo of this cute fish, we recommend approaching patiently. If the fish starts to swim away, leave it alone. Given time, it will return. A photographer’s random behavior that ignores direct pursuit of the fish will calm it down, allowing a closer approach for a photograph.  

For your chance to see this delightful puffer fish in Gorontalo, please make your dive reservations directly with Miguel’s Diving.  

Bornella anguilla Spotted in Gorontalo

Bornella anguilla is an unusual nudibranch that sports a mosaic pattern on it skin. Numerous branches grow from its body. Its colors include brown, orange, and tan.

A Rare Find

Bornella anguilla eating
Bornella anguilla ready to eat hydroids

At the end of a dive at Gorontalo’s Otje Garden dive site, a dive master showed guests a most unusual nudibranch. It was busy munching on hydroids, its mouth parts clearly open. Eager underwater photographers took their chance to take shots. Miguel’s Diving staff confess they see this nudibranch less than once a year.

Bornella anguilla, the Eel Bornella nudibranch  

In 1984, this unusual nudibranch received its official name when Johnson submitted his research. Its scientific name reflects its distinct ability to swim like an eel. Anguilla means eel in Latin. Other Bornella species of nudibranch can swim as well. However, they flex their bodies from side to side to generate motion. In this way, they swim sideways. Bornella anguilla creates a muscular wave that moves down its body. In this way, it swims head first in an eel-like manner. While swimming, its rhinophores and cerata lay down for better streamlining.

Bornella anguilla is found throughout the Indo-West Pacific region. However, divers have also seen it in the Indian Ocean. It can grow up to eight centimeters in length. That means it can be rather large for a nudibranch.

Unusual Body Structure

This species of nudibranch has an unusual body structure.

Below the twin rhinophores on its head are its eyes. Although the eyes of most nudibranchs are hard to see, those of this nudibranch are distinct. They look blue or black, depending on the angle. Can you spot the eye in the close-up photo? Rhinophores are sensory organs that detect chemical scents in the water. The eyes measure light and darkness.

Most remarkable are the numerous branches growing from the body. These are called cerata. A pair of them grow around the brown rhinophores. This helps protect the sense organs from predators that can nibble a replaceable cerata instead.

Bornella anguilla close up
Close-Up of Bornella anguilla

Another unusual feature of this nudibranch are its gills. Most nudibranchs sport a cluster of gills near its dorsal rear and look like a small tree. On this nudibranch, the gills are distributed along the dorsal side of the body and protrude from the various branches that grow there. They look like mostly transparent feathers that poke from a cerata. These are visible in the close-up photo.

To dive in Gorontalo with dive masters skilled at spotting unusual marine life, please make your dive reservations with Miguel’s Diving.

Hawksbill Turtle Swims in Gorontalo Waters

Hawksbill turtle is the most common sea turtle that divers see in Gorontalo. Green sea turtles also live in local waters. Olive Ridley, Loggerhead, and Leatherback turtles are the other species found in Indo-Pacific oceans.

Identifying a Hawksbill Turtle

Hawksbill turtle sunburst
A Hawksbill turtle swims by

Both Green and Hawksbill turtles appear similar. However, certain features help identify both species. Hawksbills have two pairs of small scales between their eyes. These are called prefrontal scales. Green turtles have a single pair of large scales. Also, Hawksbill turtles have the distinctive hook on their beaks. Hence their common name. In addition, the large back plates on their shells overlap. As a result, the rear edges of the shell looks jagged. Those plates are called scutes. Overlapping scutes are called imbricated. Hence the scientific name Eretmochelys imbricata. Lastly, the Hawksbill turtle has two visible claws on each front flipper.

A larger turtle is more likely to be a Green sea turtle. Hawksbills found in the Indo-Pacific are smaller than those found in other tropical seas. Their size at maturity is only one meter in length. They also mature much more slowly, taking over thirty years.

The Hawksbill turtle prefers certain sponge species. It also eats jellyfish, tunicates, soft corals, crabs, squid, and fish. Surprisingly, this sea turtle is biofluorescent. Perhaps its diet of certain coral species makes it so. Also, this sea turtle will close its eyes when eating a jellyfish.

Threats to Hawksbill Sea Turtles

Eretmochelys imbricata is considered critically endangered. It is illegal internationally and in Indonesia to import or export turtle products. Also, it is illegal to harass, capture, or kill Hawksbill turtles.

All sea turtle species are threatened or endangered, according to International Union for the Conservation of Nature and Natural Resources (IUCN). Some sea turtles think floating plastic bags are jellyfish and eat them. Eating plastic will eventually kill the sea turtle by blocking breathing and digestion.

Nesting Sea Turtles

A female sea turtle will reach forty to sixty years in age before laying her first eggs. Breeding females will lay eggs every two years. They will lay these every two to three weeks. They lay 50 to 150 eggs each time. The temperature of the sand determines the sex of the hatchlings. Higher temperatures produce females, whereas lower temperatures produce males.

Eretmochelys imbricata
Eretmochelys imbricata rests on a Gorontalo reef

A female sea turtle will crawl onto a sandy beach at night. Then she will dig a hole to lay eggs and recover them. Scientists believe they return to the beach of their birth to lay eggs.

Baby turtles will hatch about two months of incubation. They will usually hatch about the same time. Then they crawl as quickly as possible to the sea. Many predators from birds to large fish eat baby sea turtles. The chances of surviving to adulthood are very small. Humans still collect eggs and hunt sea turtles. This is illegal in Indonesia.

Land turtle can pull head and flippers inside the shell. However, a sea turtle cannot. Also, sea turtles secret excess salt swallowed when eating via tears.  

For your chance to see a Hawksbill turtle in Gorontalo, please make your dive reservations directly with Miguel’s Diving.  

Thelenota rubralineata Graces Gorontalo Reefs

Thelenota rubralineata, the Ruby-striped sea cucumber, lives in selected dive sites in Gorontalo. This beautiful sea cucumber does not occur in abundance anywhere in Indo-Pacific waters.

Distribution of a Beautiful Sea Cucumber

Thelenota rubralineata in Gorontalo
A Ruby-lined sea cucumber in Gorontalo

The Ruby-lined sea cucumber lives at a few Gorontalo dive sites. It prefers sandy areas between dense coral ridges. Only occasionally will one crawl over Gorontalo’s hard coral colonies. Also, this sea cucumber rarely ventures above 15 meters. Miguel’s Diving staff have not seen it below 30 meters. So, its environment in limited.

Throughout the Indo-Pacific region, Thelenota rubralineata is uncommon. However, it enjoys wide distribution. Researchers have found it in Papua New Guinea, the Solomon Islands, Guam, New Caledonia, the Philippines, Indonesia, the  South China Sea, Fiji, and Palau.

Thelenota rubralineata, a Recent Species

Surprisingly, Thelenota rubralineata is a recently described species. Two researchers, Massin and Lane, found it in Micronesia and described it officially in 1991. Sea cucumbers of the Thelenota genus have an internal ring of plates. This ring is called a calcareous ring. It is located between the mouth and stomach.

Thelenota rubralineata has a distinct external appearance. Various spiked protrusions occur over its back. Their tips are yellowish. Multiple small spikes occur randomly on its sides. The mazes of red lines cover its whitish back and sides. Underneath, the Ruby-lined sea cucumber has tiny feet called pedicels. These are semi-sticky. Thelenota rubralineata moves by contracting and extending its body. This beautiful cucumber has a soft body and is not venomous. Its usual size is 30 to 40 centimeters long. Its maximum size is 50 cm.

close up of Ruby-lined sea cucumber
Close-up of Thelenota rubralineata

Some people use Red-striped sea cucumber as a common name, although it clearly has no stripes. Reflecting its Latin name, Miguel’s Diving staff call it Ruby-lined.

For your chance to see this beautiful sea cucumber for yourself, please make your dive reservations and join us for some great diving.

Salvador Dali sponge spawns

Sponge spawning of a Salvador Dali sponge gave divers a glimpse of a rarely witnessed event. Occasionally, Miguel’s Diving staff witness a large sponge releasing sperm into the current. This video records the only time we have witnessed spawning of a Salvador Dali sponge.

Salvador Dali Sponge Spawning

Most sponges are hermaphrodites, having both male and female reproduction capacity. Other sponges, like Barrel sponges, reproduce by spawning. Males release clouds of sperm into the current. Since the sperm is buoyant, the event looks like the sponge is smoking.

A female sponge will release eggs into the current. However, eggs are negatively buoyant, so the eggs sink to the ocean bottom. Some eggs may remain inside the ex-current opening of large vase and barrel sponges. When a female sponge releases her eggs, the nearby area of ocean bottom will look as if snow has fallen there. Miguel’s Diving staff have never seen a female sponge releasing eggs.

Spawning of a Salvador Dali sponge

In the video of a Salvador Dali sponge spawning, notice the clouds of sperm into the current. This indicates that the sponge is male. No one knows how often a particular sponge will spawn. Miguel’s Diving staff have witnessed simultaneous sponge spawning among numerous sponges over a certain area of reef.

Gorontalo’s Surreal Sponge

When Miguel’s Diving first opened diving in Gorontalo, we discovered a strange and giant sponge. No one had seen this morphology before, although they were quite common on Gorontalo’s deep walls.

The surreal surfaces of this sponge reminded us of the Spanish painter Salvador Dali. So, we began calling it the Salvador Dali sponge.  

A Local Morphology of Petrosia lignosa

Sponge spawning of Salvador Dali
First ever photo of a Salvador Dali spoge

In order to discover the identity of this unusual sponge, we sent two samples to Nicole J. de Voogd. She was studying sponges at the Institute for Biodiversity and Ecosystem Dynamics, Zoological Museum, University of Amsterdam. The interior bodies of sponges are composed of mazes of microscopic spicules. Each sponge species has a unique pattern. After looking at the two samples we sent under a microscope, Nicole could identify our Salvador Dali sponge. It is Petrosia lignosa.

The genus name Petrosia actually means “stony hard.” When compared with other sponges, all Petrosid sponges are hard and rock-like. So far, Petrosia lignosa is known only from vertical walls in eastern Indonesia. It was first described in 1925 from the Togian Islands, south of Gorontalo. However, in other locations this sponge lacks the distinctive swirls found on our Salvador Dali sponges.

No one knows why this sponge looks so different here in Gorontalo. According to Nicole, the “Salvador Dali sponge” would be a locally unique morphology of Petrosia lignosa

Although divers cannot expect to witness sponge spawning, Salvador Dali sponges are common in Gorontalo. For your chance to see some for yourself, please make your dive reservations and join us for some great diving.

Galaxy Coral Forms Massive Colonies in Gorontalo

Galaxy coral forms the largest hard coral colonies in Gorontalo. Massive mounds and columns of this spiky coral astound passing divers.

Stars of the Reef

A colony of Galaxy coral is made up of countless individual corallites. A single Galaxy corallite measures between three and four millimeters. A corallite is composed of a circular polyp, which is living. Surrounding the polyp are ridges that radiate from its center. These radiating ridges serve to protect the polyp from predators. These radiating ridges give each individual polyp the appearance of a star. A colony composed of countless stars gives rise to a galaxy of coral.

However, divers should be careful when approaching Galaxy coral. Those radiating ridges are extremely sharp and can easily cut one’s skin. Moreover, the scientific term for radiating ridges is septa.

Galaxea astreata

Galaxy polyps in Gorontalo
Galaxea polyps open

The most common Galaxy coral in Indo-Pacific waters is Galaxea astreata. Usually, its colonies are low and encrust the substrate. At other times, it forms upright columns. For Galaxea astreata, its septa count is eight to twelve. Usually, it does not fully extend its polyps during the day. This helps protect it from daytime predators. In the closeup shot from Gorontalo, note the white-tipped polyps in this daytime photo.

Galaxy coral in Gorontalo

Galaxy coral colonies
Massive Galaxy colonies in Gorontalo

The large and notable Galaxy colonies of Gorontalo are most likely Galaxea astreata. In total, there are ten species of Galaxy corals. Possibly, Galaxea fasicularis is the coral found at dive sites here because it forms the largest known colonies. In Gorontalo, Galaxy corals form colonies larger than a city bus. This colony size is far larger than any described in scientific literature. In the wide angle shot from Gorontalo, note that the corals far in the background are still part of this massive colony of Galaxy coral.    

Two factors contribute to the giant size of Galaxy colonies in Gorontalo. The marine environment here is extremely healthy. Also, Galaxy corals possess special sweeper tentacles. These are a defensive organ tipped with powerful stings. Those stings keep other corals from living close by. That makes room for the colony to expand.

Galaxy corals not only feed on plankton caught with the polyp’s tentacles. Inside its body live zooxanthella. These convert sunlight into food. Notably, Gorontalo lies slightly north of the equator, so sunlight is abundant.

For your chance to marvel at the Galaxy coral found in Gorontalo, please book your dive trip with us.

Bottlenose Dolphin Video

Bottlenose Dolphin video from Gorontalo, Indonesia, brings joy to those who love the sea and its many inhabitants.

Side Job with Benefits

Miguel’s Diving is committed to educating and training local Gorontalo people to work in the marine tourism sector. As a result, almost all of our staff are local fishermen. Moreover, all of our dive staff have successfully trained to be PADI dive masters.

On days when they are not diving, our dive staff often head to sea to fish. Gorontalo is an exporter of high-quality Yellowfin Tuna. The tuna is caught by handline from small wooden boats. These boats are outrigger canoes and made by hand in the village. A fisherman here can only catch one tuna at a time. That makes this local style of fishing most eco-friendly.

Bottlenose Dolphin Video

At the urging of Miguel’s Diving, our dive staff bring their handphones sometimes when they go to sea. One day, Boka, one of our dive masters, joined a school of happy dolphins. He made this Bottlenose Dolphin video to share. Enjoy – the dolphins clearly did!

A Pod of Bottlenose Dolphin play in Goronotalo

Cetaceans are commonly seen in Gorontalo waters. Ocean depths drop below four kilometers not far from our coastline. In this Bottlenose Dolphin video, the proximity of deep blue waters to shore is clearly visible.

Pods that Pass

Pods of Bottlenose dolphin often pass through Gorontalo waters. Inshore Bottlenose Dolphins tend to be smaller than those that stay in deep water. Indeed, they are the smallest cetaceans we see regularly. Adults typically measure less than two meters long. Their most prominent feature is their beaked “bottle” nose. Also, they stay in social groupings called pods. They are friendly and active. This identifying behavior makes the Bottlenose Dophin video so entertaining.

For your chance to see Bottlenose Dolphins, please make your dive reservations with us.

White ribbon eel glides in Gorontalo

White ribbon eel glides across the sandy bottom in shallow water. It undulates in effortless motions.

An Unexpected Sighting

During daylight hours, white ribbon eels usually stay hidden in their sandy dens. They live in shallow lagoons, preferring areas with white sand. At night, they emerge in search of food. They prefer to eat small crustaceans and molluscs. Sometimes, they will eat nudibranchs.

white ribbon eel face
A White ribbon eel glides over the sand

At other times, they will move from one den to another. This means they will swim across the sandy bottom. One day, Miguel’s Diving staff observed a White ribbon eel doing just that. However, this one did not move quickly from one hole to another. It spent fifteen minutes swimming across the bottom. Occasionally, it stuck its head into goby holes. Perhaps it was searching for a shrimp to eat.

Once, it swam underneath some cloth lost by a fisherman. The cloth was half buried in the sand. Soon, the White ribbon eel emerged from the other side. After crossing back and forth, it finally disappeared head first into a hole.   

Elegance in Motion

This ribbon eel has a pale body color. Its dorsal fin is continuous and edged in brilliant white. Its face is peppered with small spots. When swimming, its motion in indeed like a sensuous ribbon.

The Truly Unique White Ribbon Eel

White ribbon eels belong to its own genus of which it is the only species. That means its morphology is truly unique. As with other eels, it does not have scales. Instead, slime covers its body. This mucous coating allows it to enter and exist holes in sand and gravel without getting scratches. Also, the slime repels parasites.

The eyesight of this unique eel is not as good as its sense of smell. That sense is well developed. Moreover, it has not two nostrils but four. The first pair lie on the tip of its nose. The second pair are barely visible and lie level with its eyes. Its sense of smell leads the White ribbon eel to its prey. In fact, during the long interval with our dive staff, the ribbon eel totally ignored the diver and camera. Nothing good to eat there!

ribbon eel searches for food
A White ribbon eel searches for food

As with many eels, the branchial openings are small holes. They are found behind the head, one on each side.

The maximum length of this beautiful ribbon eel is about one meter. However, most measure between fifty and eighty centimeters in length.

Its Scientific Name

Pseudechidna brummeri is the official name of the White Ribbon eel. Its genus name consists of two Greek words. Pseudes means false and echidna means viper. This name is meant to describe the pointed feature of its long snout.

Pieter Bleeker was a Dutch doctor who lived in Indonesia for eighteen years. During that time, he collected over twelve thousand specimens of marine life. He published extensive studies in his two work classic Atlas Ichthyologique des Indes Orientales Néêrlandaises. One of the species he discovered and named was the White ribbon eel, Pseudechidna brummeri. The species name honors Lieutenant Medical Colonel Brummer. Brummer was a colleague, friend and fellow collector.

For your chance to dive with beautiful marine life, please make your dive reservations and perhaps you will sight a ribbon eel.

Pilot Whale Beaches in Gorontalo

A pilot whale beached itself close to Olele Marine Park in Gorontalo on 3 January 2020.

Too Big to Help

A local fisherman named Iwan Adam discovered the large pilot whale on the beach near his house in Tolotio Village. The time was 0530 hours. According to Iwan, the cetacean was still breathing and alive when he found it. So, he called nine friends to discuss options for saving the whale. Unfortunately, the discovery coincided with low tide.  Also, the pilot whale weighed almost two tons. Dragging the whale over the rocks and coral proved impossible, given the conditions. Although they poured water on it to keep it cool, the whale died twenty minutes later and before the tide rose again.

pilot whale beached
Short-finned pilot whale beached in Gorontalo

Government officials arrived to assess the situation. According to their notes, the whale measured 482 centimetres long. Its girth was 220 centimetres. Moreover, it was male. In order to avoid contamination, the villagers buried the carcass.

Sightings of Pilot Whales in Gorontalo

Miguel’s Diving staff have observed pilot whales on other occasions. Although these cetaceans are famous for traveling in pods, we have only observed single pilot whales near diving areas. Pods of pilot whales occasionally pass Gorontalo fishermen, who are handlining yellowfin tuna farther from shore. The dorsal fin of a pilot whale tends to fold back a bit. Thus, with this observation, visual identification is possible.

The Short-Finned Pilot Whale

dead whale
Distinctive head, mouth and fins of a pilot whale

The unfortunate whale that beached itself was a Short-finned Pilot Whale. Globicephala macrorhynchus is its scientific name. Distinguishing features include a rounded, bulbous head. Its fins are set forward on its body and point sharply back. The mouth slants upward. Mostly, its color is uniformly black. Some individuals exhibit a diagonal stripe from eye to dorsal fin and a cape. Sometimes, a lighter belly patch is visible. The body is slender but robust. In death all color will be lost.

The Short-finned Pilot Whale is among a group of marine life called blackfish. These cetaceans are mostly jet black in color. The Long-finned Pilot Whale is not found in our area, as it prefers the cold waters of the northern and southern oceans. In Gorontalo, Miguel’s Diving staff have seen other blackfish species. This includes Pygmy Killer Whale, Melon-Headed Whale and False Killer Whale. Surprisingly, the most common blackfish we see are Killer Whales or Orca.

Behavioral Characteristics

Short-finned Pilot Whales usually travels in pods but rarely breaches. Feeding mostly at night, they love deep-sea squid. These whales have no fixed migration routes, but they often follow squid spawning. Also, they prefer the edges of continental shelves and deep underwater canyons. This perfectly describes the marine substrate along the southern shores of Gorontalo in Tomini Bay.

For your chance to see one of Gorontalo’s blackfish, please book your dive trip with us.  

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