Some things you should know about SCUBA Diving in Krabi before you visit the magical underwater world of the Andaman sea.

We all love to explore and venture into the unknown, in fact the ocean covers some 2/3 of the globes surface. By coving this vast area there are numerous landscapes to explore beheith the waves.

Krabi is home to over 100 islands offering many diverse SCUBA dive sites to explore and learn about. The limestone geology of Krabi allows for the salt rich water of the Andaman bay to slowly eat away at the rocks and create thousands nooks and crannies perfect for moral eels, giant clams and other fish and invertebrates to seek refuge. We highly encourage you to get out into the waters of Krabi and explore this fascinating life under the seas. There are a number of dive schools in Ao Nang to choose from but they all have a great record taking out students to SCUBA dive in Krabi.

General information on Diving in Krabi:

  • General depth of most dives: 10-35M
  • Certification needed to dive 60% of all dive sites: PADI – Advanced Open Water Diver (or equivalent)
  • General visibility: 10M – 20M
  • Best season to dive: January – April (due to the currents and visibility of this time of year tends to be better)

Krabi offers a diverse range of dive sites for divers of all abilities, from cave and wreck diving to deep technical diving to the quiet peaceful recreational dives, there is something for everyone. We just ask you to please not touch the corals as they are extremely delicate and some species grow at the painfully slow rate of 2mm/year Maning many of the large corals you can see are often thousands of years old.

Listed below are the dive sites of Krabi, read on and see what dive sites fits your needs/skills.

Krabi is home to some truly stunning and beautiful coral reefs, fish and invertebrate species as well as large pelagic fish and sharks the oceans have to offer. We openly invite you to explore this amazing world beneath the waves if your considering SCUAB diving in Asia.  First we want to go over some safety and need to know before you get wet.

1. Is SCUBA Diving for everyone?


Yes, nearly everyone who wishes to go SCUBA Diving can, there are a few medical conditions which can prevent you from SCUBA diving but for the most part 99% of the population has the ability to go. Main concerns are if you have a heart condition, so if you do we recommend you seek prior advice from a medical professional. There are doctors in Thailand and Krabi who work with the dive companies in the region assessing whether or not divers can go SCUBA diving in Krabi. So if you don’t have time prior to leaving your country, don’t worry there is time when you arrive to check.

2. I’m not certified, can I still go SCUBA Diving in Thailand?

Yes, there is the easy to do DSD (Discover SCUBA Diving) which is a single day trip out to certain dive site. When you’re on a DSD day you will have a Dive Instructor with you and no more than 3 other DSD students all of who will dive together. The Dive Instructor will give a short briefing on the boat about safety concerns, breathing, decompression and what you can expect to see underwater. The Dive Instructor will not let you dive below a certina depth, therefore keeping you safe on your day of diving.

3. I want to get certified, how can I do this?

is SCUBA diving for you

All of the SCUBA Diving operators in Krabi will offer a number of certification courses, ranging from Bubble maker courses (youger than 12 years old) Open Water SCUBA Diver all the way up to Dive Instructor. You’ll have to decide which certification level is right for you and then get more details from the operator directly.

4. Is SCUBA Diving in Krabi dangerous?

SCUBA Diving in general carries with it inherent risks, but for 99.9% of divers there is no worry as long as you follow a number of safety procedures. Check your equipment and dive with your abilities you have nothing to worry about. Here is a short list of things to consider before you take to the great blue.

Never hold your breath – When you descend in water your lungs act like a sponge contacting under pressure and expanding when pressure is released. Water applies pressure to your lungs and the greater the depth the greater the pressure. We all known that when you breathe in air expands the lungs and when your breathe out your lungs shrink. When you’re SCUBA Diving it’s important to always be breathing therefore allowing excess air to escape when pressure is added or taken away. If your hold your breath during SCUAB Diving and you are in the process of ascending the lungs will overextend because the pressure will not be able to escape. In the unlikely event of holding ones breathe there is a chance of damaging lungs due to over-expansion, a condition not to be taken lately, so please always remember to breathe.

Ascend slowly – When your are SCUBA Diving there is an exchange of pressure and gasses between the blood stream. One of these gases is Nitrogen and with Nitrogen making up some 70% of the gas we breathe in, there is a lot of it. When a breath is taken in this Nitrogen under pressure is absorbed into the blood stream, then you ascend slowly much of this nitrogen is allowed to slowly come out fo solution. In the event that you ascent too fast from a depth there is a chance that the Nitrogen in the bloodstream can consolidate under the skin creating small pockets of gas. This is one of the causes of the infamous ‘Bends’. This can all be avoided by ascending at a rate no faster than 30 feet (10 meters) per minute. Always make sure to make a safety stop at 15 feet (5 meters) to ensure all excess Nitrogen is given time to come out of the blood stream at a safe rate.

Check your gear – SCUBA Diving in Krabi is not possible without SCUBA Diving equipment, therefore treat it with respect. Always check the air in your tank, check the weights on your BCD, make sure your buddy’s gear is also in order. Always check that you take a look at their equipment, in fact the vast majority of equipment related accidents do not occur to equipment malfunction, they occur due to the divers not knowing how to use the equipment. Depending on your dive check equipment pertinent to that dive, for example if your going on a night dive, make sure you have a Primary and back up torch. If your going on a nitro dive, make sure you’re tank is properly mixed with the correct proportions of nitrogen. If you’re going on a 2 tank dive, make sure both of your tank are filled properly and connected securely.

Stay Fit and hydrated – SCUBA Diving is a physically demanding sport. It’s a sport that takes a toll on anyones body, therefore it’s always best to treat your body the best that you can in order to ensure it will take care of you on a dive. Go for a job, eat healthy in general. Get a good nights sleep and don’t drink the night before going out SCUBA Diving in Krabi. Also it’s recommended to drink plenty of water before and during SCUAB Diving in Thailand. Avoid cigarette and coffee while diving as much as you can, and if you’re not feeling good in between or before dives take a rest and don’t push yourself.

Dive within your limits – Depending on your experience, your certification and your ability there are certain depths and dives you are able to go on. It’s important that you take that seriously and don’t go beyond your ability. If your an open water diver capable of SCUBA Diving to 18 Meters in depth and have dived to 18 meters before, but the dive your about to go on can go to 40 meters, make sure you tell the dive master or dive instructor of your level and ability. All dive masters and dive instructors will ask during the dive briefing what all divers certification level are. Don’t push yourself it’s often the case for many dive related accidents when divers go above and beyond their ability to try and show off.

Follow the rule of thirds – Always dive with safety in mind. When thinking of safety and time management make sure you’re planning ahead in all times. There is a simple rule call the of theirs which lines out that the beginning of a dive or outward journey should have 1/3 of the air reserve allocated for this purpose. The return journey should also have 1/3 of the air supply allocated for this part of the trip. Finally the ascent should have 1/3 of the air supply allocated for this purpose. Leaving 1/3 of the air supply for a safe ascent and giving enough time for the safety stop will ensure that the bends can be avoided and and unforseen issues which can arise can be dealt with with amply air.

Plan your dive and dive your plan – Every dive site is different, every dive site required certain knowledge and understanding, thats why it’s always best to go SCUBA Diving in krabi with a professional knowledgable dive operator. Someone who lives and dives the dive sites of Krabi daily and knows each and every place like the back of their palm. Prior to every dive the dive master or dive instructor will go over the dive site in detail. Alerting all divers of anything needed to know about regarding currents, depths, swim-throughs and such. It’s important that every dive is planned (by the dive master or dive instructor) and that all divers listen and ask questions about the dive and moreover understand the plan for the dive site. It’s important that all divers understand the dive plan and stick to it.

Use the buddy system – SCUBA Diving in Thailand and the world for that matter recommends that all SCUBA Divers dive with a buddy. There are unforeseeable events which can occur during a dive it’s always important that you have a second diver with you who can assist in case something happens. When you are diving with a buddy whether it be a friend or someone who was assigned to you by the dive instructor it’s important that you talk with them, alert them of any particular equipment or dive issues you might have prior to descending into the water.

5. How deep are the dive sites of Krabi?

The whole Andaman bay covers a range of depths opening up a number of dive sites, the most shallow dive sites are around 5-10 meters and the deepest dive sites around around 70 meters. The deeper dive sites 40+ meters require technical diving abilities as the standard PADI or CMAS recreational diving certificate allows divers to descend down to 40 meters at most.

6. I want to go free diving can I?

free diving in krabi thailand

Yes most certainly, all of the dive sites in Krabi are open to freedivers, but free diving is a whole different sport that SCUBA Diving. We recommend you visit and get in touch with a seasoned professional free diver who can teach the skills and challenges of the sport prior to you going out to go free diving yourself. Our recommended Free diver trainer is: Brendon Ford Sing, the founder of Shark Guardian. He can be reached on his mobile 0622121544 or by visiting