Our Team

North Bali Reef Conservation- YBS Team Members


bali volunteer program reef conservation founder ketut

Ketut De Sujana Mahartana – Co Founder / Local Volunteer Coordinator

Ketut is also the founder of Yayasan Widya Sari –Volunteer in Bali, an NGO that provides free education and improves the lives of children in many villages across Bali. Since his childhood growing up in Tianyar, Ketut has noticed a significant decline in fish biodiversity and reef health along the Tianyar coast. Ketut’s family has deep roots in the fishing community and co-founded this project to provide a sustainable livelihood to the people of the village. For the past 10 years, Ketut has been working to resolve the plastic pollution problem in Tianyar by teaching children about the issues, aiming to change the mindset they develop at home. There have been significant improvements with the amount of pollution along the coastline, but he understands there is still more work to be done. Ketut has developed a keen interest in scuba diving, specifically underwater photography, from photographing volunteers helping to deploy reef structures to beautiful nudibranch smaller than a grain of rice.




north bali reef conservation team - zach

Zach – Co Founder / International Volunteer Coordinator

Zach, originally from England, visited Tianyar in 2016, and realised the
local marine ecosystem was in urgent need of restoration. He worked with Ketut to establish North Bali Reef Conservation in 2017, alongside his Environmental Science degree at Bournemouth University. Zach holds a
keen interest in marine ecology and conservation, and is deeply concerned about the level of plastic in the ocean around the world. His role at North  Bali Reef Conservation involves managing volunteers and working with members to the community to coordinate conservation activities. Zach previously managed a research program at North Bali Reef Conservation which was part funded by the Society of Conservation Biology. He is now a PhD student researching the ecological and socioeconomic potential of artificial reefs in Bali, and his research is funded by Earthwatch and Bournemouth University



bali volunteer program reef conservation program manager kyle

Kyle – Conservation Project Manager

Kyle has Scottish Heritage and earned a Bachelor’s degree in Ecology and Conservation from Lancaster University. Since joining the project in 2017 and working so closely with local people his understanding of Indonesian language has developed considerably. This is useful when managing day to day activities like artificial reef structure construction and deployment to make sure volunteers and fishermen are all working together effectively. In 2018, Kyle earned his PADI Open Water Scuba Instructor certification and now works alongside local instructors to certify volunteers and encourage all divers at the program to respect the underwater environment and follow safe diving practices to ensure that no further damage is done to the reef.


bali volunteer program reef conservation local diver mangkuGede Mangku – Chief Builder

Mangku is our chief builder and the most creative in our team, often implementing new ambitious reef structure designs. He is the treasurer of the local YBS fishermen group and is a useful link between our two organisations. Mangku ensures that his friends in the YBS group come to lend us a hand in construction and deployment whenever they have the time. Mangku is always working on improving his English so he can communicate with our volunteers easier. Simply talking with volunteers in slow and simple English has already had a positive impact on all the fishermen’s English understanding. Mangku also organises opportunities for volunteers to accompany fishermen on their early morning fishing trips. While learning about the fishing methods they use, volunteers can also see the sunrise and may also be lucky enough to spot some dolphins.




local conservation staff komang bolet

Komang Bolet – Dive Guide

Komang regularly helps with our artificial reef structure construction and deployment. He also has a keen interest in scuba diving and often joins us underwater to move our structures. Komang has earned the PADI Open Water certification and plans to further his dive education to improve his ability to confidently and safely guide volunteers around both our artificial and natural reef. Perhaps he may even progress to the PADI Open Water Dive Instructor certification so he can help to certify volunteers here in Tianyar. Komang is also a driver, taking volunteers to popular destinations in Bali on their time off.






Yowana Bhakti Segara (YBS) fishermen group

Yowana Bhakti Segara roughly translates to ‘youth who protect their oceans’. This is a local fishermen community initiative aiming to improve fishing practices sustainably and ensure that all families in the community receive the help they need. Specifically with our project, the YBS fishermen mainly help with the construction of artificial reef structures and the deployment of structures. The most hard working and dedicated of the fishermen who help us are now employed by us. We hope that in the future we can employ all the members of this group and expand our conservation efforts with their help.