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Educational Snorkeling Courses

Snorkeling Gili Islands

Explore with Purpose

• Small groups

• Learn about sea turtles, corals and fish

• Support conservation

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Turn your snorkel trip in the Gili Islands into a hands-on learning experience. Whether you’re planting coral, identifying sea turtles, or spotting reef fish, each course is designed to connect you with the reef, and support our marine conservation efforts.

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Learn how corals grow, why they matter, and how we restore them. Visit our coral farm, plant your own coral fragment, and join a guided Coral ID snorkeling tour.
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Meet the sea turtles of Gili Matra and learn how to identify individuals by their markings. A respectful, guided Turtle ID snorkeling tour that deepens your understanding of these gentle creatures.
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Get to know the reef’s most colorful residents. Learn how to identify common reef fish and understand their role in the ecosystem during a guided Reef Fish ID snorkeling tour.
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TESTIMONIALS

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Course Schedule

9AM to 12PM

9:00 until 9:30
Theory session

9:30 until 11:30
Snorkeling tour

11:30 until 12:00
Debriefing + Ocean Awareness Talk

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What's Included?

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Course, snorkel gear, national park ticket, water, coffee, tea, fruit.
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Led by marine biologists.
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Price per person

All inclusive: National park ticket, snorkelling gear, course, water, tea, coffee, and fruit on the boat.

Your contribution supports our coral restoration and community engagement efforts.

Group of 1–2 people: IDR 750,000
Group of 3 people: IDR 650,000
Group of 4 people: IDR 600,000
Group of 5 or more people: IDR 550,000

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Prerequisites

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Kids minimum age 8.
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Participants must be able to swim to join the course.
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We operate with a minimum of 2 participants.
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What is BRUV – Baited Remote Underwater Video method?

A camera is placed on the seafloor with bait positioned in front. It records fish that come to investigate over a set time. Footage is reviewed later to identify species and behavior. It’s a passive method like setting a camera trap for marine life.

In short: BRUV = film fish attracted to bait, then analyze the video later.

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What is UVC – Underwater Visual Census method?

Divers swim along a transect line and visually record all fish seen within a defined area. They note species, size, and numbers during the dive. It’s a live fish count. Like taking attendance in a moving classroom.

In short: UVC = spot and count fish by eye while swimming the transect.

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What is Belt Transect method?

A measuring tape is laid out along the reef. In our case divers count all visible invertebrates (e.g. sea cucumbers, starfish) within a set belt width usually 1 or 2 meters. They record species and numbers while swimming slowly along the line. It’s a wide-area visual count like sweeping a corridor for invertebrates.

In short: Belt = count all invertebrates within a set zone along the tape.

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What is 3D Coral Monitoring method?

Divers take multiple photos of coral structures from different angles. Photos are processed using software to build a 3D model of the coral. This model shows shape, size, and changes over time. It’s like creating a digital twin of the coral to track its growth.

In short: 3D = capture coral from all sides, then build a model to monitor changes.

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What is UPT – Underwater Photo Transect method?

A measuring tape is also laid out along the reef. Instead of recording points manually, divers take overlapping photos along the line. These images are later analyzed on a computer to assess coverage and species. It’s a visual capture method like scanning the reef with a camera for later analysis.

In short: UPT = record the whole transect with photos, then analyze later.

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What is PIT – Point Intercept Transect method?

A measuring tape is laid out along the reef. Divers record what’s directly under specific points at fixed intervals (e.g. every 10 cm). It’s a manual, visual sampling method. Like checking what’s beneath each tick mark on a ruler. Data is written down underwater, point by point.

In short: PIT = record what’s under each point by eye, underwater.