The European Outdoor Conservation Association hand out money for conservation projects based on public voting. Their current list of projects is themed on reducing plastic pollution and includes a cave conservation project in the lava tubes of Mauritius. This would entail a nationwide cave clean up, monitoring of bats and swiftlets, and education and interpretation.

If you want to give the project a better chance of winning the funding, you can vote for it here: http://www.outdoorconservation.eu/project-info.cfm?pageid=19 (it's in the 'Nature' category)

Done.

1000's of fruit bats are being.  Blummin shame - they were one of the highlights of visiting this island a few years ago 

https://www.independent.co.uk/news/world/africa/fruit-bats-mauritius-endangered-species-flying-foxes-cull-extinct-a8805966.html