A method for establishing underwater burial garden comprises drilling one or more holes into an underwater floor surface to a predetermined depth. Each hole in the underwater burial garden may be located at a predetermined location, or plot, respective to any other hole, which may be in an adjacent or nearby plot. A sealed container containing ashes of a cremated individual may be positioned into a hole. The sealed container may be constructed of a material to withstand the underwater environment. A cap may be placed over the hole, thereby containing the sealed container within the hole. The cap may have a plate positioned thereon with text pertaining to the cremated individual, which may be viewable by swimmers and/or boaters.