PADI Underwater Naturalist Specialty Course

Learn about the different major aquatic life groupings and how they interact so that you understand what you observe in the underwater environment. Fascinated with aquatic life? Engrossed with life under the surface? Find our more with the PADI Underwater Naturalist Specialty Course!

The 1 day PADI Underwater Naturalist Specialty Course is designed to each student divers to view the aquatic ecosystems objectively, and understand the intricate interactions and inter-relationships between underwater organisms.

Day 1

08:00 – 3:30pm
You’ll complete 2 Naturalist dives, within your designated depth limit (according to prior certification level). You will identify 2 types of aquatic plants, 4 types of vertebrates and 4 types of invertebrates whilst demonstrating minimal passive and responsible interaction and diving techniques. You will also locate and identify a number of inter-relationships demonstrating symbios, and keep aware for signs of human effects upon the environment. You’ll no longer see ‘fish’, but individual species with distinct strategies for surviving in a complex, interactive ecosystem. You’ll begin to understand some of the inter-related survival tactics that allow quite unexpected creatures to live side by side!


  • Age 10+
  • Must be at least an Open Water Diver
  • 1 Day
  • In Good HealthNot suffering from a cold or ear infection, and meet PADI Course Health Requirements.

Like Fun & Adventure!


PADI Underwater Naturalist Specialty, Age 10+, 1-day

8,900 THB    


Why Choose Scubafish?

What languages can I learn in?

We run fully supported PADI dive courses in:

  • English
  • German
  • Swedish
  • French

Course materials (DVDs, manuals, quizzes & exams) are available in many other languages allowing us to run the following semi-supported courses:

  • Danish
  • Norwegian
  • Finnish
  • Thai
  • Spanish
  • Italian
  • Dutch
  • Japanese
  • Chinese
  • other languages available on request
  • eLearning courses are available in most languages.

What's included in the price?

The PADI Underwater Naturalist Specialty Course costs 8,900 THB and includes:

  • Free transfers to & from any Lanta resort
  • Small groups (max 4 per Instructor)
  • The lastest PADI course materials & manuals
  • PADI certification fees (incl. digital photos)
  • Dive equipment rental
  • Waterproof zip bag
  • Free Scubafish T-Shirt

When you are out on the dive boats we also include:

  • Breakfast
  • Lunch
  • Drinking water
  • Iced Coffee
  • Fruit juices
  • Fizzy drinks
  • Tea & coffee
  • Fresh fruit
  • Towels

Optional Extras:

  • Private Instructor – 2,000 THB p/day
  • Extra Course Dive x1 – 3,700 THB
  • Extra Course Dive x2 – 5,200 THB

Additional Fees:

National Marine Park Entry Fees:

600 B p/dayHigh Season only (November-April)


Become a PADI Underwater Naturalist Specialty Diver:

  • Lifetime license to dive anywhere in the world
  • Worldwide recognition
  • Look at the underwater world in a whole new way!
  • Understand interactions and relationships within the marine eco-system.
8,900 THB

How often do courses run?

Courses start every day, at around 08.00. You can book now, or come in to see see us while you’re on holiday in Ko Lanta. We offer free transfers to and from your resort in Ko Lanta for any of our dive courses or daily dive trips.

Are there Additional Charges?

Please note that during High Season (November – May) everyone is required to pay 600 THB per day National Marine Park Fee when out at the Lanta Dive sites.

Since this is a seasonal charge, this is not included in the course price.

There may be a fuel surcharge to visit some of the further away dive sites if you choose to dive these sites during your course.

  • King Cruiser Wreck (+ Shark Point & Anemone Reef): + 1,200 THB [Friday]
  • Hin Daeng & Hin Muang: + 1,000 THB [Monday, Wednesday, Saturday]

What's the next step?

Becoming a certified PADI Underwater Naturalist Specialty Diver is only the start!

Your next step may be to complete a further 4 PADI Specialty Courses – 5 PADI Specialties allows you to apply to be a Master Scuba Diver, the highest non-professional level in recreational diving!

Or perhaps you just feel like making some dives for fun! Scubafish is ideally located in the South of Ko Lanta to offer shorter journey times on daily dive trips to some of the best dive sites in Thailand.

Need more information - Send us a message

What will I learn in the PADI Underwater Naturalist Specialty Course?

This 1 day course consists of two main areas which include academic training, self-study sessions, and 2 Naturalist dives:


Self Study: You’ll learn about the major aquatic life groupings using the Linnaeus classification system, interactions such as symbiosis, commensalism, the role of aquatic plants, food chains and predator prey relationships and responsible interactions with aquatic life and will then complete the knowledge review.

PADI courses are designed to help you learn in the way that’s best for you. Courses combine visual, reading, writing and practical learning techniques to ensure you really understand each section.

During 2 Naturalist Dives you’ll locate and identify a number of examples of aquatic plant-life, invertebrates and vertebrates. You’ll also observe and identify a number of inter-relationship types (prey-predator, mutualism) and examples of human effects on the environment.

Scuba Diver - Day Out on the Boat



PADI Course Health Requirements

You must complete and sign the PADI Medical Statement, which includes a medical-history section, to enrol in PADI scuba training programs. A positive response to a question does not necessarily disqualify you from diving but indicates a pre-existing condition that may affect your safety while diving. Your doctor would be required to complete the PADI Medical Statement & Guidelines for Recreational Scuba Diver’s Physical Examination on your behalf in this instance. PADI - the way the world learns to dive

National Marine Park Fees

Please note that during High Season (November – May) everyone is required to pay 600 THB per day National Marine Park Fee when out at the Lanta Dive sites.

Since this is a seasonal charge, this is not included in the course price.


Have you checked out our Frequently Asked Questions?


Personal Teaching Methods
The Scubafish Service
Learning Options for PADI Courses


PADI Underwater Naturalist Specialty, Age 10+, 1-day

8,900 THB    

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