Yes you can definitely dive it from Donsol. Although I've been to Donsol, I didn't dive the Manta Bowl. People coming back from the trip were giving it very mixed reviews. I think it's a fairly long trip to the dive site and mantas are not guaranteed; the problem being that if there are no mantas, there is not much else to see at the site. However, I believe you can now stay on Ticao Island which would mean reduced travel time to the dive site and if you don't get to see mantas on the first day, you can easily try again the next day. Check out www.donsolecotour.com for more information.