The Genesis Biopod by Jack Hokanson is perhaps one of the most original concepts dealing with death and cremation that we have seen in a long time. Heck, it may be the only one I have seen.

Simply put your dearly departed's cremated remains inside the Genesis Biopod, and submerse it into the ocean. After five minutes of being submerged, the dissolvable bag containing the remains is gone, and all that remains is a neat playground for fish and algae.