Our History

20 years of dive service excellence


It all started in 1987, when Laarni Lehtonen started diving the deep waters of the Indian Ocean off Somalia. After many years abroad, Laarni returned to her homeland, the Philippines.

Together with her husband, Pertti Lehtonen, Laarni started a small diving facility in a container at the Mapald Yacht Club on the outskirts of Iligan City, Mindanao. The dive centre was named Sierra Madre Divers, after the mountain range in Luzon where Laarni and her family originated.

A year later, they moved to Bohol, where the first diving centres were then only operating out of the city of Tagbilaran. In 1995, Laarni obtained PADI instructor status, becoming one of the first female Filipino dive instructors.

Laarni and Pertti then began their dive education business in Bohol in a dug-out cave at the Bohol Tropics Hotel.

In 1998, Sierra Madre Divers moved to a small shop on Alona Beach, becoming one of the first dive centres on the island of Panglao.

Sierra Madre Divers was awarded PADI 5-star Instructor Development status in February 2013.


In 2001, Brett was backpacking and missed his flight to Nepal. He ended up doing his open water course in Koh Tao. He pursued his dream of diving with whale sharks, visiting the remote Lakshadweep islands of India, and the cold waters of New Zealand.

Brett was partner in a successful liveaboard diving company and managed several 5* dive centres before settling down in Bohol. Brett has been at Sierra Madre Divers for seven years and is the in-house Platinum Course Director.

His dedication to professional diver training has its origins in the firm belief that every new diver is a new protector of the sea.

Brett speaks English and Mandarin.

PADI Course Director - Brett Robertson
Brett Robertson
PADI Platinum Course Director

While in Australia in 2006, Raphael explored the underwater world for the first time and completed his open water course. What he experienced there sparked a love of diving and the life in the ocean for him.

In 2010, he decided to make it his career and life, subsequently getting work as a dive professional in Thailand, Malaysia, Borneo, and Malapascua Island.

Now he has built his home in Bohol, and is manager and instructor at Sierra Madre Divers. He loves to see the happy faces of his students who are just as excited to see and explore the whole new underwater world like he did in Australia years before.

Raphael speaks English and German.

Raphael Schnider
PADI Master Instructor / Manager

Shayne and Brett taught diving together in Koh Tao, Thailand in 2010. Since then, they have kept in touch while Shayne traveled the world, managing successful dive centres in the Maldives and Indonesia. A brief stint teaching at Sierra Madre Divers stuck with Shayne and she ended up back in Bohol after her travels.

Shayne believes that personal safety and marine conservation are the important responsibilities of divers. She hopes to nurture divers who love the ocean as much as she does, so that our future generations may also enjoy the beauty of diving.

Shayne speaks English and Mandarin.

Shayne Ng
PADI Master Instructor


从海里回到城市时,他发现早已不习惯了每天固定的办公室生活。于是放弃了稳定的国企工作,只身来到薄荷岛成为了潜水教练。“有什么比做自己喜欢的事更幸福的呢?” 让更多的人喜欢潜水学好潜水,从而投入大海怀抱去保护我们的海洋,是阿樂一直的愿望。.


Zhuang Sunle
Mark Zhuang
PADI Master Instructor

Bernard was a French chef for 18 years, living between France and Australia. In 2013, he did his open water course during a vacation in Indonesia and immediately fell in love with diving.

In 2015, he left his kitchens, came to Sierra Madre Divers to learn to be a dive professional, fell in love with Bohol, and stayed!

Bernard loves the beauty of the dive sites around Panglao and tries to keep them that way and protect them. He loves teaching and transforming people’s lives just like it happened to him few years ago.

Bernard speak English and French.

Bernard Le Guyader
PADI Master Scuba Diver Trainer

Bre experienced scuba diving for the first time in the Caribbean. During university in California, she learnt how to dive, trained in marine biology and completed several conservation projects.

In 2016, Bre met OceanQuest founder, Anuar Abdullah, in Phi Phi, and subsequently became a Sea Shepherd Dive / OceanQuest Coral Propagation Trainer.

Bre’s thirst for travel and ocean conservation led her to Sierra Madre Divers where she is currently in the process of establishing more coral nurseries and cataloging nursery sites across the country.

Bre speaks English.

Bre Lyle
SSD/OQ Coral Propagation Nursery Director