The PADI Foundation offers worldwide grants in underwater science, environmental projects, and marine education. In the past, applications have included many for projects in tropical regions. Most grants are US$5 thousand to US$10 thousand, although PADI will consider budgets up to US$20 thousand. There are no nationality restrictions. Applications will be accepted starting 01 November 2015 and no later than 01 February 2016.
PADI Foundation -- Grants for Marine Conservation 2016