Aileu in detail
Many NGOs and local organisations take on volunteers to assist in a wide variety of roles.
Blue Ventures (www.blueventures.org) runs regular six-week Marine Conservation Expeditions at Ataúro, which is a pay-for 'volunteer' diving course.
It is essential to do your homework about the organisations and their work. Lonely Planet does not endorse any organisations that we do not work with directly.