[kathainbowen]

I'm not certain of the government in Jakarta, but some governments have been very open to conservation of natural features if it seems viable for productive ecotourism, including protective status of areas involved in such projects. I would probably start there to see if that could possible (to preserve a section of the reef as it's own museum, particularly if it is a shallow reef that can be easily viewed by snorkeling) and get any legal status for your organization in order before asking people for donations.

These days are kind of scary about the internet, what with all those people who win the "Nigerian National Lottery" or who discover that their cousin, the Nigerian king, has died and left them a fortune. There are all kinds of people running all kinds of scams online, so it really helps not-for-profit ventures to have a tax or otherwise legal status to prove their legitimacy, especially when asking for donations online.