Splash's Kauai talk. There are some pictures too.
Ukulele Material
Jul-17-2015 Fri
Ukuleles have been made out of many different materials.
Wood is by far the most common. Koa is a Hawaiian hardwood that is very good for ukuleles.
Island ukuleles usually have a Koa body, Mahogany neck, Ebony fretboard, and Spruce for the braces and kerfed lining.