Biorock Coral Reef Restoration

opgericht in 2004
Gili Eco Trust
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Coördinator | Sian
Coördinator | Sian
Boek met de Flex-Optie! Kies nieuwe vertrekdata of wijzig je vrijwilligersproject zonder meerkost.


Hands-on underwater action for our endangered oceans and corals.
Learn in-depth ecology and functioning of coral reef ecosystems.
Help identify & rescue broken corals by planting them using unique Biorock technology.
Become a certified Ocean Quest Coral Propagator.
Become certified in a globally recognized coral reef health monitoring & research method.
Learn how to successfully restore damaged coral reefs using Biorock technology. Learn how to monitor and assess reef health using Reef Check methods. This volunteer program is especially suitable for:
Leeftijd 18+

We run marine volunteer internships throughout the year which start with our ‘zero to hero’ 4 week intensive workshop in marine restoration, we run 6 of these courses every year. This course combines knowledge, lectures, theory, dives, and practical Biorock reef building and maintenance through a 4 week course where you will gain:

  • Reef Check Eco Diver certification 
  • PADI Introduction to Biorock reef technology speciality 
  • Ocean Quest Coral Propagation certification

The first week of the course consists of detailed marine species identification and substrate identification in preparation for the Reef Check training and surveys. Reef Check is a scientific transect survey which is globally recognised globally

·         It gives a great insight into the functioning of a healthy coral reef ecosystem

·         Extensive identification training dives,

·         At least two surveys on the reefs around Gilis that we’ve been monitoring for over a decade.

·         Get a Reef Check eco pack incl. dry bag, Tshirt, USB key, underwater slates



The second week is the start of the course Introduction to Biorock technology. A unique solution to restoring damaged coral reefs.

·         Learn the science behind electric reefs

·         Learn why it’s more efficient than other forms of reef restoration on the Gilis

·         Work with the team of divers to learn how to maintain, set up and work on a Biorock

·         Transplant broken fragments of corals from damaged reefs

·         Spot and mitigate the problem with coral predators

·         Get a Coral Gardener T-shirt

Throughout the 2 week course, you will dive twice a day every day (apart from Sunday – which is a day off to explore the island) and then have a lecture, or theory or Biorock maintenance in the afternoons. This is roughly from 8am - 4:30pm each day with a break for lunch.


The third week is all about orientation. We’ll introduce you to all of the Gili Eco Trust projects and how you’ll integrate your energy and time into each of them and schedule your volunteering time.

·         Meet the team

·         RE-cycle tour

·         Biorock Eco Snorkel tour

·         Debris Free Friday waste training

·         Waste Processing & Management training

·         Biorock checks & Maintenance

·         Long-term environmental surveying training


The fourth week is all about applying these methods in practice and completing the Ocean Quest Coral Propagation and monitoring course. With this training, you’ll be able to continue monitoring our nurseries that have been established since 2018.

·         Coral ecology and reproduction training

·         Coral propagation methodology

·         Nursery maintenance 

·         Nursery monitoring project (via SCUBA and snorkelling) 


When you've completed the training, you'll be fully immersed in many of the projects that we have been running long-term. It brings great experience in how small tropical islands are managed (and indeed mismanaged!) whilst observing the cultural differences and promoting eco-tourism.

Dagelijkse activiteiten

Starting with the first 2-week dive training:

8:30 dive set up
9:00 dive to the Biorocks
10:30 coffee break
11:00 dive to the Biorocks
1pm lunch
2pm theory/maintenance/repairs
4pm finish

And after the training course is complete you will be participating and conducting in any number of the activities below (season dependant)

Monthly Reef check dives
Daily Biorock snorkel tours with tourists
Biorock maintenance and cable rewiring on land
Biorock weekly snorkel checks
Coral Nursery maintenance and monitoring
Biorock maintenance dives and repairs
Research assistant to marine researchers
MPA and surface buoy management and monitoring
Anchor survey counts on the beach
Turtle nest watch (April - September only)
Weekly beach clean at Debris Free Friday


Whilst Gili Trawangan is being fast recognized as the party central of Indonesia, there are plenty of free time activities to be getting on with that doesn't involve alcohol. 

  • Yoga
  • Freediving
  • Golf & Virtual golf
  • Gym & fitness
  • Eco paddleboard safaris
  • Sunset horse riding
  • Snorkelling 
  • Swimming
  • Eco movie nights
  • Sunsets
  • Volcano hikes
  • Boat tours
  • Lombok waterfall excursions
  • Paddleboarding
  • Water sports



Om deel te nemen aan het programma dien je tenminste 18 jaar oud te zijn op de startdatum van het programma. Er kunnen uitzonderingen gemaakt worden indien je een bewijs van toestemming kan aantonen van uw wettelijke voogd(en) of samen met je ouders deelneemt.
Je dient over volgende taalkennis te beschikken Engels (vloeiend)
Geen beperkingen. Helpende handen van over de hele wereld zijn welkom.
Andere vaardigheden

PADI Advanced Open Water (or equivalent)
- you can complete this at the same dive shop if you arrive a week in advance.
** Additional charges apply**

- 20 dives logged to ensure you have good buoyancy and skills underwater
Uw helpende hand wordt verwacht op maandag, dinsdag, woensdag, donderdag, vrijdag en zaterdag van 08:30 - 16:00

Diensten ingesloten

Diensten door Gili Eco Trust
Prices can vary due to the exchange rate. 
15% Deposit to secure your place via Volunteer World. 
Remaining to be paid on-site in local currency Indonesian Rupiah: 17,000,000IDR (cash/PayPal/CC)


  • 2 dives every day for Weeks 1 & 2 (apart from Sunday – which is a day off to explore the island)
  • All scuba diving equipment (excluding dive computer)
  • Biorock maintenance and theory in the afternoons
  • All reading materials
  • Reef Check eco pack incl. dry bag, Tshirt, USB key, underwater slates
  • Protective equipment for underwater gardening
  • Applicable underwater experiences such as coral gardening, removal of coral predators and underwater clean-ups
  • PADI Distinctive speciality: Introduction to Biorock Process
  • REEF CHECK Eco Diver certification
  • Ocean Quest Coral Propagation certification

Divers MUST be a minimum Padi Advanced with at least 20 dives. This is to ensure you have sufficient buoyancy skills as we are working very close to the reef and picking up heavy corals, unlike regular recreational diving. However, if you are not yet certified, no problem! You can arrive on site a little earlier to complete your PADI dive training. (additional fees for SCUBA certifications apply)

Internet toegang
Beperkte toegang op de project site
Wat is er NIET inbegrepen?
Visum, vluchten, reisverzekering en vaccinaties zijn NIET inbegrepen in de programmakosten. Afhaling van de luchthaven is ook niet inbegrepen in de programmakosten. Gelieve uw eigen accomodatie te regelen. Eten, tussendoortjes en drankjes zijn bijkomende kosten.
Vlucht tickets
De dichtste luchthaven is Lombok International Airport (LOP) in Praya. We assisteren u met het vinden van goedkope vluchten naar Indonesië.
Naar het buitenland reizen is een avontuur en het is best om goed voorbereid te zijn. Plots ziek worden of gewond raken, annulaties of diefstal - een reisverzekering voor Indonesië biedt zekerheid en is een meerwaarde.
Als je de intentie hebt om als vrijwilliger aan de slag te gaan in Indonesië dien je eerst medisch advies in te winnen alvorens je eropuit trekt. Kijk de benodigde vaccinaties na voor Indonesië.

Data & Kosten


Gegevens over jouw aankomst

2023 Course Date Starts:

13th February

10th April 

15th May

3rd July

2nd October

6th November

Our start date for the Intro-training is always a Monday, but it is nice to arrive a few days early to get used to the island, enjoy some free time and find somewhere to stay. We have many recommendations of places to stay to suit almost any budget.
We will send you a 'Before Arrival' guide when you sign up, followed by a 'Welcome Pack' closer to arrival to guide you through what to expect, what to bring, how to obtain visas and transport to the island.
We are located on the Gili Islands off the coast of Lombok so arrival by flight to Lombok (LOP) is easy and we can help to arrange transfers across to the island.
Bali is a short 2 hour boat ride away, with a larger international airport, Denpasar Airport (DPS) we can provide advice and assistance to you all the way from the airport.

jan. feb. mrt. apr. mei jun. jul. aug. sep. okt. nov. dec.
8 - 24 weken


Kosten: Prijs in USD
8 weken (min. verblijf)
9 weken
10 weken
11 weken
13 weken
15 weken
24 weken (max. verblijf)
Gemiddelde kosten
$107 /week

Houd er rekening mee dat de hierboven getoonde kosten worden geschat. Gili Eco Trust zal je op de hoogte houden over de finale kostprijs gedurende uw aanmeldprocedure.
Waarborg (15%)
De waarborg dient om je plek als vrijwilliger te verzekeren. Betalingen worden door PayPal behandeld, onze betrouwbare betalingsprovider. Indien je niet over een PayPal account beschikt, kan je ook met een credit kaart betalen.
Finale betaling (85%)
Uw finale betaling zal worden goedgekeurd door Gili Eco Trust gedurende de aanmeld procedure. Veel voorkomende oplossingen zijn een banktransfer of contante betaling op de projectsite.

Waarom Volunteer World

Bijkomende zekerheid geboden door Volunteer World
Volunteer World is 's werelds leidende vergelijkingsplatform voor internationale vrijwilligerswerk projecten. Wij begeleiden jou door een betrouwbare aanmeldingsprocedure - inclusief de nodige betalingen. Plan jouw zinvolle reis met Volunteer World en krijg gratis toegang tot:
Hoge ethische standaarden & transparantie in de sociale impact
Wijzig jouw reservatie zonder extra meerkost
Garantie op terugbetaling
We betalen je kosten terug als Gili Eco Trust jouw reis annuleert
Ondersteuning & tussenkomst
Wij steunen je, wat er ook gebeurt, je kan altijd contact opnemen met ons
Onze diensten zijn gratis!
Alle programmakosten worden rechtstreeks gefactureerd door Gili Eco Trust

Wat vertellen de mensen over Volunteer World?

Biorock Coral Reef Restoration

Learn how to successfully restore damaged coral reefs using Biorock technology. Learn how to monitor and assess reef health using Reef Check methods.


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