An Eternal Reef combines a cremation urn, ash scattering, and burial at sea into one meaningful, permanent environmental tribute to life. An Eternal Reef is a designed reef made of environmentally-safe cast concrete that is used to create new marine habitats for fish and other forms of sea life. Eternal Reefs takes the cremated remains or “cremains” of an individual and incorporates them into an environmentally-safe cement mixture designed to create artificial reef formations. The Eternal Reefs are then placed in the permitted ocean location selected by the individual, friend or family member.