In a proposal that redefines funeral rituals, the British startup Resting Reef proposes to turn human ashes into artificial reefs, anchored on the seabed to promote biodiversity and restore degraded ecosystems.
The initiative uses aquamation, an alternative method to traditional cremation, which dissolves the body through a mixture of water and alkaline solution and then mixes the resulting ashes with crushed oyster shells and ecological concrete.
The result is a structure similar to oyster reefs, which once installed at a depth of about 10 meters, provides habitat for marine fauna, filters water, prevents coastal erosion, and preserves the memory of loved ones.
A pilot project with high impact on biodiversity
The first trial of Resting Reef was carried out in Bali, Indonesia, and involved integrating pet ashes into reefs. Its success generated such demand that the company decided to extend the service to human ashes. Currently, they are obtaining permits to deploy these structures on the seabed next to the Plymouth breakwater on the south coast of England.
The pilot project recorded the arrival of 84 species of fish and a marine diversity 14 times higher compared to neighboring degraded areas, according to ecological monitoring data.
In Spain, a pioneering precedent: Valkyrias del Mar
Although the British proposal has captured international attention, in Spain there was already a similar initiative since 2015, driven by the Andalusian María Dolores Velasco.
After seeking a legal way to fulfill her father’s last wish —to have his ashes scattered at sea— Velasco obtained the first official authorization from the Directorate General of the Merchant Navy to legally deposit urns in open waters. Since then, her company carries out more than 100 ceremonies per year, about seven nautical miles from La Caleta beach (Cádiz).
Later on, she created Valkyrias del Mar, a project in which biodegradable urns with ashes are placed in specially designed stone structures to create artificial reefs. These pieces are submerged on the seabed, where they act as shelter and breeding grounds for multiple species.
A new vision of farewell: ecological and meaningful
These proposals represent a convergence of environmental technology, funeral ritual, and marine restoration.
Both Resting Reef and Valkyrias del Mar invite us to rethink the post-mortem legacy from a regenerative and symbolic perspective, transforming farewells into a tangible contribution to ocean health.
In addition to honoring memory, these reefs improve water quality, protect the coast, and promote the recovery of key species, in a context of growing concern over the loss of marine ecosystems.
A funeral alternative with positive environmental impact
The possibility to turn human remains into underwater life opens up new perspectives on how to bid farewell to the world: in harmony with nature, leaving a footprint that doesn’t pollute but regenerates.
