Most people think of burial in the traditional way. A death, a mourning, a service and then burial is some cemetery somewhere. There are alternatives to this form of traditional burial. The first that comes to many minds is cremation. But, what happens after the cremations is where alternatives forms of burial come into play.
Cremation is an extremely cost effective form of disposing of a person's body after death.
But it still leaves a remains that have to be dealt with. While many choose a standard URN for holding the remains, other chose to have their ashes scattered. Visions from the movies come to mind here of the lonely widow in one of many scenes. Luckily those scenes have introduced many of us to alternatives. Yes, you can be buried at sea.