Unreasonable Mentors

Cher Chua-Lassalvy

Managing Director at Batu Batu - Tengah Island

Cher is an Unreasonable Mentor. Cher has participated in 2 programs, including Unreasonable Impact Asia Pacific 2025, and has advised over 28 Unreasonable companies.
Cher Chua-Lassalvy is Co-founder and Managing Director of Batu Batu - Pulau Tengah, a sustainably-minded off-grid island retreat in Malaysia with a focus on generating profits through tourism to create positive impacts in the local area. She is also the President and Founder of Tengah Island Conservation, a Malaysian non-profit biodiversity management organisation working within the Johor Marine Park.
After completing her degree in Social Anthropology at the University of Cambridge, UK, Cher spent ten years within the financial services industry in London before returning to Malaysia to set-up and run the family-owned Batu Batu island project.
Cher has a particular interest in creating tourism products that support biodiversity and local communities and advocating for tourism as a force for good. As a native Johorean, she finds particular pleasure in developing projects in her home State. Cher is a founding steering committee member of Sustainable Travel Mersing, a multi-stakeholder destination coordination group. She is also a founding member of the Malaysian Sustainable Tourism Network, a member of the Global Sustainable Tourism Council’s (GSTC’s) Research and Academic Working Group, Economics Co-ordinator for the IUCN WCPA Tourism and Protected Areas Specialist (TAPAS) Group and an Acumen Malaysia Fellow 2021.