But when finished I realized it might dont make much sense... the convex hull over GBIF points always display enormous polygons over land and water that dont look very nice. Look at the next picture.
This is Puma concolor convex hull over GBIF data. Well this is exactly what a convex Hull is so I am not sure what I was expecting.
There is other types of convex hull like the Orthogonal convex hull that might make more sense in some scenarios, but in general this does not look good to me.
By the way, the convex hull algorithm i am using, quickhull, is amazingly fast.
If you want to try for yourself I have uploaded the test app for you to try. If anybody is interested in the source code let me know and I will post it.