There is a laminate available in Teak/Holly from an outlet in QLD.You then simply glue over a plywood base with the usual contact adhesive.
I did a house on the coast where this was used to good effect on an upstairs suspended platform.
Unfortunately it is covered over in one pic, but you get the idea in the other picture from my recent motor boat build.
Seawind Catamarans use the same product on their floor areas and is very hard wearing.
Good luck-CR.