Update (October 2026): This article has been reviewed and updated with current geographical information, coral reef conservation developments, diving regulations, and access conditions. Some reefs have experienced significant bleaching and other environmental changes in recent years, while diving permits, visitor quotas, and liveaboard arrangements may also change. Check the latest local conditions before planning your trip.
The oceans cover most of the planet Earth. If you are in the middle of the ocean, there is only an endless water space around you, only a blue surface and a blue sky above it. But what is below the surface? What can you see if you dive into the water? Yes, in most of the oceans you will see just a bottomless abyss. But there are shallow places where you can discover a fantastic new world. You can do it by scuba diving. Let’s make a journey to this geographical kingdom– the best places for scuba diving on the Earth!
Table of Contents
The underwater world
The underwater world in the Earth’s oceans and seas can be divided into three parts- shallow waters, deep waters, and just bottomless waters below the surface. The last of these is the water in the open sea, where the bottom is from 200-300 m to 11 000 m (the bottom of the Mariana Trench) below the sea level.
You can enjoy its highest layer and its sea inhabitants, but you can’t reach and see the seafloor- it is too deep, hidden in darkness, coldness, and extremely high pressure. Currently, you can reach it only inside a special device called bathyscaphe. Yes, it would be a fantastic experience, but only a few people have an opportunity to try it.
But the most beautiful part of the underwater world is the shallow water areas when you can reach the seafloor just by scuba diving. It is full of colorful life covering the bottom and filling the water above it. And it is always light during the daytime unless you enter a sea cave. So, this is the ocean zone that we are looking for.
Coral reefs
When you dive into the shallow waters of the Earth, you can see various kinds of underwater views- rocks, sand floors, cliffs, sometimes covered by seaweed. But the most beautiful underwater places are the coral reefs. They are full of shapes and colors, rich in marine wildlife, and formed by the specific nature of the corals. For this reason, the coral reefs are the best places for scuba diving.
Most shallow-water coral reefs exist in warm tropical and subtropical seas, where reef-building corals receive enough sunlight for their symbiotic algae. However, cold-water corals also exist, often at much greater depths, and some form extensive reef structures. There are several types of shallow-water coral reefs, shaped by coral growth, changes in sea level, tectonic movements, and the surrounding coastal or submarine topography.
The most common type of coral reefs is the fringing reefs, located around many coastlines in the tropics. There are also barrier reefs, platform reefs, atolls, as well as some other types, more or less similar to these. And all of these reefs exist in crystal clear waters. Thus, the combination of clear water and the whole variety of life and landforms creates a breathtaking beauty like on another planet.
Scuba diving
Scuba diving is the best way to explore this fantastic world. Yes, you can see the corals from a boat, but it is like watching a landscape through the nylon. A much better way is to do it by snorkeling, wearing a mask- now you can see it real, as it is. But again, it is like entering a big hall with treasures, staying only at the gate.
Scuba diving allows you to explore this amazing underwater world more closely. However, diving requires proper training, equipment, and experience. An entry-level Open Water Diver is normally trained to dive to 18 m, while Advanced Open Water training extends this to 30 m. With additional deep-diving training, recreational divers can reach 40 m, the usual recreational depth limit. Deeper dives require technical diving skills and specialized equipment. Fortunately, you don’t need to descend very deep to explore the coral reefs, since much of their beauty can be found in relatively shallow, sunlit waters.
Today, scuba diving is a well-developed sport. You even don’t need to buy your own equipment (although if you buy it, would be much better), but you can just rent it from a diving center or a liveaboard boat. And they not only offer rental scuba gear but also provide proper training by scuba professional instructors.
Liveaboard
This is the most proper way to travel to the best places for scuba diving, although it can be expensive. If you just go to a resort, rent your scuba equipment and hire your diving instructor, you can usually dive only near the resort. But the wildest and most beautiful diving destinations are often located far from the civilization, and the only way to reach them is by boat, sometimes traveling for several days or even weeks.
Liveaboard vessels are normally well-designed for diving, with decks for diving jumps into the water, with air bottles and other equipment, and some of them even with decompression chambers. And since liveaboard trips are longer, the vessels are turned into floating hotels, providing not only access to the best diving sites but also enough comfort during the whole trip.
One important thing to keep in mind is that coral reefs are constantly changing. Marine heatwaves, coral bleaching, storms, pollution, and other disturbances can dramatically affect individual diving sites. Between 2023 and 2025, the world’s fourth global coral bleaching event exposed an unprecedented extent of coral reefs to bleaching-level heat stress. This doesn’t mean that all affected corals died, but the condition of a particular reef today may be quite different from older photographs and travel descriptions. For the latest global information, see NOAA Coral Reef Watch.
So, let’s go on a journey to the best places for scuba diving, focusing on the coral reefs.
The 10 best coral places for scuba diving
These places are located mainly in the Pacific and the Indian Ocean, but also can be found in the Caribbean Sea. Some of them are barrier reefs, but there are also fringing, platform reefs, and atolls. Now we start with the largest coral reefs on the Earth- the Great Barrier Reef.
Great Barrier Reef, Australia
This is the largest coral reef system on Earth. It is located northeast of continental Australia, in the Coral Sea. The system is more than 2300 km (1400 miles) long and consists of hundreds of reefs and islets. Today, it is proclaimed as World Heritage Site.
The Great Barrier Reef is a coral paradise, as a vast maze with the size of Germany or Finland. Exploring it in detail and crossing it from end to end is like exploring another planet. It features various types of reefs formed by the coral growth and the specific movement of the Australian continent.
How to explore the Great Barrier Reef
Today, the Great Barrier Reef is protected within a large marine park, with different zones regulating activities such as diving, boating, fishing, and scientific research. Tourism remains possible across many parts of the reef, although operators must follow environmental and access regulations. The GBR is commonly explored through inner and outer reef destinations. Many reefs can be reached on day trips from Queensland, while more distant reefs require longer voyages. The reef has experienced repeated mass coral bleaching events, particularly in recent years, although its condition varies considerably between regions. For up-to-date monitoring, see the Australian Institute of Marine Science reef condition report.
But if you are looking for a wild marine adventure and feel like an explorer, aim to the Outer GBR, by joining a several-day liveaboard trip. The most popular boats are Coral Sea Dreaming, Pro Dive Cairns, and Rum Runner, all with excellent reviews. They will guide you to the most amazing spots of the GBR, like Osprey Reef, Ribbon Reefs, Milln, and Flynn Reefs, and the rarely visited Bougainville Reef.
Check for liveaboard trips in the GBR!
Great Blue Hole, Belize
If you look at the map, or better, the satellite image of the Caribbean coast of Central America, you can notice a long coral reef system stretching along the coast of Mexico, Guatemala, Belize, and Honduras. This is the so-called Great Mayan Reef, stretching for 1120 km.
Zoom at the reef’s Belize part. This is the Belize Barrier Reef, located near the coast of the country. Then zoom further at one of the Belize reefs, called Lighthouse Reef. If you stare at the middle of this reef, you can notice a small dark ideal circle. This is the Great Blue Hole- a 318 m wide and 124 m deep sinkhole, surrounded by a maze of corals.
How to explore the Great Blue Hole
The Great Blue Hole is a unique phenomenon, located in the middle of a coral paradise. There is no oxygen and almost no life on the bottom of the hole. And due to its depth, only professional divers can reach its deepest point. But although an ordinary scuba diver can’t descent there, just staying on an otherworldly abyss with mysterious stalactites, surrounded by the colorful beauty of the reef is a fantastic experience.
You can reach the Great Blue Hole by joining the local liveaboards Belize Aggressor III and IV. And if you join their tour, they will guide you not just to this spot, but you will explore more of the reef system, mainly Lighthouse Reef. No wonder that this fantastic place is one of the most important destinations in the world for scuba divers.
Check for liveaboard trips in Belize!
Red Sea, Egypt
The Red Sea is one of the most beautiful seas on Earth. Its waters are some of the saltiest, and some of the clearest, and most transparent. At the same time, it is located in the sub-tropical and tropical zones.
The sea washes the shores of Egypt, Sudan, Eritrea, Israel, Jordan, Saudi Arabia, and Yemen. Its warm waters (yes, it is much warmer than other bodies of water in the same geographical zones) are excellent for coral life. As a result, it presents a lot of stunning coral reefs. And the most beautiful of them are those in the Egyptian section of the sea.
How to explore the Red Sea of Egypt
In general, the Red Sea of Egypt can be divided into two parts- northern and southern. The main entry points (ports) for the northern part are Sharm el-Sheikh and Hurghada. In the north, you can see stunning coral reefs and reef formations, along with several popular shipwrecks, such as Thistlegorm and Abu Nuhas.
In the south, there are not famous wrecks, but the coral reefs are even more beautiful and exotic. The best of them are Fury Shoals, Daedalus Reef, and St. Johns Reef, accessible from Marsa Alam. You can visit most of these reefs just by a private boat, but the most remote and fantastic of them are accessible only by liveaboards, like Tillis, Emperor Asmaa, Blue Adventurer, Sea Legend, Emperor Superior, Emperor Echo, and many others.
Check for liveaboard trips in the Red Sea!
Raja Ampat, Indonesia
Now, let’s go to the far east of Indonesia, the largest island country on the Earth. Look at the extreme northwestern tip of Papua Island. You can see a cluster of small islands, surrounded by coral reefs. This cluster, consisting of 1500 (!) islands, islets, and reefs is called Raja Ampat and is one of the most beautiful marine destinations, not only in Indonesia but on the Earth.
The name “Raja Ampat”, which means “Four Kings” comes from a legend, related to the four main islands of the archipelago- Salawati, Batanta, Waigeo, and Misool. This area features one of the richest marine ecosystems on Earth, with hundreds of types of fish, corals, and other marine creatures.
How to explore Raja Ampat
There are many diving areas in Raja Ampat that you can focus on, including Misool, Waigeo, Mansuar, and the Dampier Strait. Misool is especially famous for its colorful reefs and rich marine biodiversity. The waters around Waigeo and the Dampier Strait offer spectacular fish life, although currents can be strong in some places. Around Mansuar and nearby islands, you can find excellent opportunities to encounter manta rays and sea turtles. Farther east, beyond Raja Ampat, Cenderawasih Bay is another remarkable diving destination, particularly famous for whale sharks gathering near traditional fishing platforms.
Before exploring the archipelago, check the current Raja Ampat visitor entry requirements and marine conservation fees. Some diving areas lie within marine protected zones, where specific visitor rules apply. If you travel with a dive resort or liveaboard operator, confirm which permits and conservation fees are included in the package.
Check for liveaboard trips in the Raja Ampat!
Sipadan Island, Malaysia
Now we go to the easternmost frontiers of Malaysia, near the northeastern tip of Borneo (Kalimantan) Island. Here is the Celebes Sea, surrounded by Kalimantan, and the islands of the Philippines. And here is one of the ends of the Asian continental shelf.
Here you can find an island, rising 600 m directly from the seafloor, beyond the edge of the continental shelf. This is Sipadan Island, a remnant of an extinct volcano- the only ocean island of Malaysia. It is turned into an underwater coral paradise, presenting one of the richest marine life areas on Earth.
Sipadan is a small island, surrounded by shallow coral reefs. This shallow coral area ends with an edge. The bottom slope beyond this edge steeply descends into the dark depths of the sea. Both the shallow and the deep area form a fantastic marine world, revealing stunning beauty for the scuba divers.
How to explore Sipadan Island
The island is located not far from Semporna, one of the easternmost cities of Malaysia, in Sabah State. Once you arrive there, you can reach Sipadan Island by speed boat for about an hour. But have in mind that the island is a natural park, so there are no places for accommodation there- no hotels, no resorts. That’s why the visitors usually go to the nearby Mabul Island.
Sipadan is strictly regulated, and diving requires an advance permit issued through Sabah Parks. The daily visitor quota has changed over the years, so don’t rely on older published figures. Permits are limited and usually arranged through registered dive operators, including resorts and liveaboards based in the surrounding area. Divers may be subject to minimum certification requirements, so confirm the current rules with your operator. The number of dives allowed per permit and the operating hours are also subject to park regulations. The island itself has no tourist accommodation, so visitors stay aboard authorized vessels or on nearby islands such as Mabul. For current booking procedures and registered operators, see Sabah Parks.
Check for liveaboard trips to Sipadan Island!
Tubbataha, Philippines
Now, let’s go northeast, to the neighboring Sulu Sea, between Malaysia (Sabah), the islands of Palawan, Negros, Mindanao, and the other smaller islands around them. There are several small islets in the middle of the sea, but the most spectacular of them is the reefs of Tubbataha.
Tubbataha consists of two main coral atolls, North Atoll and South Atoll, together with the smaller Jessie Beazley Reef, all rising from the deep waters of the Sulu Sea. They are isolated from the inhabited islands of the Philippine Archipelago and have no permanent civilian settlements or freshwater sources. Their remoteness, combined with strict protection, has helped preserve an exceptionally rich marine ecosystem. Today, the Tubbataha Reefs Natural Park is a UNESCO World Heritage Site with regulated access.
How to explore Tubbataha Reef
Due to its remoteness and natural park status, Tubbataha is normally visited on authorized liveaboard diving expeditions departing from Puerto Princesa, Palawan Island. The journey across the Sulu Sea usually takes around 10 to 12 hours, depending on the vessel and sea conditions. The diving season is short, generally running from March to June, when the seas are relatively calm. Outside this period, regular recreational diving expeditions are normally not operated. Trips typically last several days, with the vessels serving as floating accommodation near the reefs. There are no permanent civilian settlements within the park, although park rangers maintain a station there.
The other sand bars of the reefs are restricted for visiting to protect the unique nature there. But you can enjoy the local diving spots. These spots are located around the three atolls, and each of them offers its own unique natural world. Among the best liveaboards are Seadoors, Discovery Palawan, Infiniti, Solitude One, Discovery Adventure, and Narayana.
Check for liveaboard trips to Tubbataha Reef!
Blue Corner Wall, Palau
Our next coral scuba diving destination is Palau Islands in the Pacific. Palau is one of the archipelagos of Micronesia, consisting of one large island, and many other smaller islands, islets, and reefs. The State of Palau is established on the archipelago, and now it is a popular destination for visiting and exploring.
Palau features coral reefs, limestone formations, tropical rainforests, and incredibly beautiful beaches. There is also the famous Jellyfish Lake, inhabited by golden jellyfish whose stings are generally not harmful to humans. Visitors can explore the lake by snorkeling under the applicable local rules, but scuba diving is not permitted there. The surrounding marine environment offers many coral diving sites, as well as shipwrecks, mainly dating from World War II. Another remarkable site is the artificial German Channel, which has become an important marine wildlife habitat. But one of the most spectacular diving sites is Blue Corner.
How to explore Palau and the Blue Corner Wall
Palau has air connections to many countries, mainly in East Asia. Once you arrive in its biggest city Koror, you can travel by local transport around the main island, or join local ferries or other boats to explore the other islands. But again, the best way to visit and experience the Palau diving sites is by joining a liveaboard trip.
The Blue Corner Wall is a combination of coral reefs and underwater cliffs, extremely rich in marine wildlife- coral, fish, and other marine creatures. Another natural spot is the Chandelier Caves- underwater caves with stalactites and stalagmites. Along with the human artificial sites, you can explore all of them by liveaboard boats, of which the most popular are Solitude One (the same that goes to Tubbataha too), Black Pearl, and Ocean Hunter 3.
Check for liveaboard trips around Palau!
Exuma Cays Land and Sea Park, Bahamas
Now, let’s go to the Atlantic Ocean. Except for the Caribbean Islands, it lacks the multiple coral reef systems of the Pacific, and partially in the Indian Ocean. But the geological structure of the Caribbean archipelagos provides an excellent environment for coral reefs development. And some of the best coral reefs can be found in the Bahamas Islands.
These islands are quite flat, and the sea between them quite shallow. At the same time, they are located in the tropical geographical zone. As a result, here we can find one of the most beautiful coral reefs on Earth. And the best place to find them is Exuma Cays- a chain of islets and reefs in the middle of the archipelago.
How to explore Exuma Cays
Part of the Exuma Cays archipelago is protected within the Exuma Cays Land and Sea Park, one of the Caribbean’s most important marine reserves. Here you can explore well-preserved coral reefs, clear waters, and a great variety of marine species. The park is a no-take reserve, where fishing and the removal of marine life are prohibited. You can reach different parts of the area by liveaboard, private boat, or organized excursions, depending on your starting point and the weather. Visiting boats must follow the park’s anchoring and mooring regulations. The islands are sparsely populated, so many places still offer a wonderful feeling of remoteness.
There are many diving spots in and around the Exuma Cays, including Jeep Reef, Amberjack Reef, The Washing Machine, the Austin Smith Wreck, and the Lost Blue Hole, a remarkable submarine sinkhole. Not all of these sites lie within the boundaries of Exuma Cays Land and Sea Park. They can be explored on diving cruises and, in some cases, shorter boat trips, depending on the location and sea conditions. Liveaboard operators in the wider Bahamas and Exuma region have included Aqua Cat, Blackbeard’s, and Bahamas Aggressor, although individual vessels, routes, and availability should be checked before booking.
Check for liveaboard trips around Exuma Cays!
Ari Atoll, Maldives
The Maldives is the country in Asia with the smallest land area, and one of the lowest-lying countries on Earth. Its highest natural ground elevation is only about 2.4 m above sea level. But this land area is only a very small percent of the whole country’s area. The rest consists of ocean waters, ranging from shallow coral reefs and lagoons to deep channels between the atolls, with a rich variety of fish and other marine creatures.
Maldives Archipelago consists mainly of atolls. It is located in the equatorial geographical zone of the Earth. So, we can expect a great variety of coral wildlife, and there really is. All of the atolls have a lot to offer, but maybe the most popular and amazing is Ari Atoll. This is because creatures like whale sharks, manta rays, turtles, and many others are best presented here, due to the unique topography of the area.
How to explore Ari Atoll
Ari Atoll is around 50 km long and consists of 105 islands, islets, reefs, and sand bars. It is located southwest of the capital Male. The liveaboard trips to Ari Atoll are usually between 7 and 12 days, and their itineraries normally include other destinations too, but still focus mainly on Ari. The atoll is administratively divided into North Ari and South Ari, and the trips usually stay longer time in one of these parts.
There are a lot of diving sites in Ari Atoll, of which the most beautiful one is Maaya Thila. It is one of the underwater pinnacles, inhabited by a rich variety of wildlife. There are several depth zones of the pinnacle, each one with its own local ecosystem. The deeper zones present also caves and overhangs. Other great diving sites are Fish Head, Donkalo Thila, Maamgili, and many others. And the most popular liveaboards are Emperor Serenity, Scubaspa Yang, Scubaspa Ying, Eco Blue, Carpe Vita, and Emperor Explorer.
Check for liveaboard trips in the Maldives!
Namena Marine Reserve, Fiji
Now we go to the last of the best places for scuba diving. It is located in Fiji- an exotic island country, located deep in the Pacific Ocean, the easternmost archipelago of Melanesia. Fiji consists of two big islands- Viti Levu and Vanua Levu, and hundreds of other, smaller islands, islets, and reefs.
One cluster of these islets and reefs is Namena Barrier Reef, located south of Vanua Levu Island. It is around 16 km long, and consists of one bigger island- Namena Island, surrounded by an arc of reefs.
It is directly exposed to the currents from the open sea, and sometimes it can make diving difficult. However, these currents produce incredibly rich marine wildlife. For example, four of the seven kinds of sea turtles can be seen here. Today, this amazing place is turned into a marine reserve.
How to explore Namena Marine Reserve
To explore Namena Marine Reserve, you can arrange diving excursions from Savusavu on Vanua Levu, or join a longer liveaboard expedition exploring the Koro Sea and neighboring reefs. Liveaboards may depart from different ports in Fiji, depending on the operator and itinerary. One established option is the Nai’a liveaboard, although it is not the only way to visit Namena. Liveaboard itineraries and departure schedules vary, with some expeditions lasting around 7 to 10 days and including Namena along with other reefs and islands in the Koro Sea.
During your trip, you would visit some of the best spots in Namena- Chimneys, Grand Central Station, Blue Ribbon, Magic Mound, and North Save a Tack. Each of them presents its own variety of features, like hard and soft corals, pinnacles, fish schools, bommies, and many others.
Check for liveaboard trips in Fiji!
These are the 10 best coral places for scuba diving. But of course, there are many other places too. I would mention the coral reefs around the other Caribbean islands, around Madagascar, in Thailand, Indonesia, the western coast of Australia, and especially the wonderful, but more difficult access coral areas in French Polynesia, Marshal Islands of Micronesia, New Guinea, Solomon Islands, Kiribati, and Vanuatu.
Exploring this fantastic underwater world is different than traveling to any other place on Earth. This is like exploring another planet. And we all hope it can be protected from some destructive human activities like overfishing, pollution, and everything that causes global climate change. And we wish we can always this fantastic world now and in the future.
Want to see more charts of best natural features and go to explore them?
Take a look at the following ones:
Most beautiful karst hills in China and Southeast Asia
Get more impressions from some of the prettiest coral reefs on the Earth!
Check some books about the underwater world:
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Hi, we are Krasen and Ying Ying. Krasen is from Bulgaria, and Ying Ying is from China. We are passionate about geography and history, and we believe that the best way to experience it is by exploring the Earth in reality, not in a school, and not virtually.
So, we created this blog Journey Beyond the Horizon, where we share geographical knowledge, travel guides and tips how to experience it when you explore our planet, and a lot of inspiration.
And we wish you a happy journey, not just virtually, but most of all- in reality.
Enjoy!
Krasen and Ying Ying
Hi, we are Krasen and Ying Ying. Krasen is from Bulgaria, and Ying Ying is from China. We are passionate about geography and history, and we believe that the best way to experience it is by exploring the Earth in reality, not in a school, and not virtually. So, we created this blog Journey Beyond the Horizon, where we share geographical knowledge, travel guides and tips how to experience it when you explore our planet, and a lot of inspiration. And we wish you a happy journey, not just virtually, but most of all- in reality. Enjoy!
