New Course Director

We are delighted to announce that we have teamed up with Course Director Lisa Bier to offer our Instructor Development Course.

Lisa is well known here on Koh Lanta, where she has been based for many years. She has been an instructor since 2002 and a Course Director since 2007. She is an experienced CD, having certified over 50 IDC candidates.  As well as speaking her native Dutch, she is also fluent in English and German, as well as some French, Thai, Swedish, Norwegian and Danish.

PADI IDC Course Director

Lisa has very clear ideas about how the IDC should be run, striking a careful balance between classroom presentations and in-water training. She also has a deep interest in conservation, which fits in with our ethos  here.

We are looking forward to working together to add to our existing IDC program and are excited to be collaborating on new projects. Welcome to our team Lisa!



Trash Hero

On the 27th October 2015, Roman Peter from Trash Hero visited Koh Lanta to talk about the work of the organisation. He carried out a very informative presentation about the charity, which was started on Koh Lipe in 2013. It started out as a small community project with local dive professionals getting together to clean the beach. From there, it grew into something much bigger. They now have 10 chapters throughout Thailand and are looking to expand all the time.


scuba diving Koh Lanta Thailand Trash Hero Conservation


They started an innovative project where local businesses offer stainless steel water bottles for sale. Each business that sells the bottles provides a free water refill service, meaning that anyone who invests in a bottle can easily fill up no matter where they bought it.

The bottle is a great reminder of your trip to Koh Lanta and a really effective way to make a genuine difference.


Trash Hero Scuba Diving Koh Lanta Thailand

IDC 2014

Today, we start our latest Instructor Development Course on Koh Lanta with Platinum Course Director Rich Reardon.  The candidates are our recently qualified PADI Divemasters, Tamika Short and Hannah Gossner.  We had a lot of fun scuba diving with them and showing them the local dive sites.  They are both very excited to continue along their professional path, and with qualifications in marine science, they are both looking to improve on their existing skills and obtain new ones to help them in their chosen career.

We wish everyone the best of luck!

IDC Welcome photo

Leopard Shark sightings at Koh Haa

On our dive trips, we expect to see sharks at Koh Bida, but in recent years, we haven’t seen many at Koh Haa.  This season, we have been lucky to have a number of sightings of leopard sharks at Koh Haa.

As some of you may know, we are working with the Spot the Leopard Shark project, which is a monitoring program being run by Dr Christine Dudgeon from the University of Queensland, Australia.

Leopard Shark

Recently, we had an amazing encounter with an adult male who was around 2 metres in length.  One of our divers, Sonja Loehner, was lucky to have her camera with her and took some great photos of him.  We submitted these photos to the project, and they were very quickly able to tell us that this leopard shark is the most photographed shark of the project.  Named Ben, he has been seen 13 times!

It is important to discover the sex of the shark.  If you look between the pectoral fin and the tail, and see a clasper, you can identify the shark as a male.  The absence of a clasper would indicate a female shark.

We will continue to submit photos and hope that we will find a new shark to add to the database.


IDC Preparation

On the 27th March 2014, we started our first Instructor Development Course.  Run by Platinum Course Director Richard Reardon, seven candidates started their journey towards becoming a PADI instructor.

Before the IDC starts proper, we conduct a preparation course so the students can refresh their skills and get them ready for the course.


They spend time in the classroom revising theory and learning what the course will entail, and in the water practicing skills.  This prep course lasts for three days, so our candidates will go into the IDC fully prepared.

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Hidden Depths Diving
123 Moo 1, Ban Saladan, Koh Lanta,
Thailand 81150
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