Do biodegradable water urns float before they sink?

Yes. Nearly all are designed to float on the surface for a few minutes so the family can share a moment of farewell, then absorb water, sink, and gradually dissolve. The float gives the release a calm, visible rhythm rather than everything happening at once.

How long does a water urn take to dissolve?

It depends on the material and the water conditions. Paper and plant-fiber urns can break down within hours, while salt or clay designs may take a day or more. Colder water generally slows the process. The maker's instructions usually give an expected range.

Where am I allowed to release one?

For the ocean, the EPA requires releases at least three nautical miles from shore, with notification to the agency within 30 days afterward. For lakes and rivers, rules vary by state and by the specific waterway, and some are restricted. Always confirm local permissions before the day.

Can I put all of the ashes in one urn?

Usually yes, as long as the urn's stated capacity matches the volume of remains. Check the size before ordering. Some families choose to release only a portion in water and keep the rest in a memorial or jewelry piece at home.

Are biodegradable water urns environmentally safe?

They are made from natural, non-toxic materials chosen to break down cleanly, and cremated remains are essentially inert mineral fragments. To stay fully low-impact, add only biodegradable flowers and follow the EPA and local guidelines for the location you choose.

Guides

The Best Biodegradable Urns For Water Burial

A biodegradable water urn floats briefly on the surface, then sinks and gently dissolves, returning a loved one to a lake, a river or the sea. These are our favorites, with a short guide to the rules and how to choose.

Our picks

My Favorite Water Scattering Urns

These are the water urns we recommend most often, from simple scattering urns to sculptural pieces for a full sea burial. All are fully biodegradable and designed to float briefly before descending.

Our favorite

Dolphin Water Burial Biodegradable Urn

$300

A hand-sculpted dolphin that rests on the water and gently descends. The piece families mention to us most.

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Simple Handmade Biodegradable Urn For Water

$170

Understated and dignified, made from sustainably sourced paper. A quiet choice for a simple ceremony.

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Dolphin Biodegradable Water Burial Urn

$255

A gliding dolphin form that rests on the surface before it descends. A gentler price than our featured dolphin.

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Fresh Flowers DIY Biodegradable Urn For Water Burial

$190

A floating urn the family dresses with fresh flowers before the release, making the preparation part of the ceremony.

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Lotus Sea Burial Biodegradable Urn

$285

A lotus that opens on the surface before it descends. Especially meaningful for Buddhist and Hindu families.

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Sand Dollar Water Burial Biodegradable Urn

$287

A sculpted sand dollar for families drawn to the shore. Floats briefly, then sinks to rest.

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Small Whale Biodegradable Water Burial Urn

$275

A gentle whale form for a smaller portion of ashes, ideal when the family is dividing them.

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Large Painted Turtle Water Burial Urn

$299

A hand-painted sea turtle, the symbol of a long life well traveled.

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Mini Starfish Biodegradable Scattering Urn

$75

A keepsake-size starfish for a small portion of ashes, often released by grandchildren during the ceremony.

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Products link to You Are Forever, our sister memorial store, or to partners; we may earn from qualifying purchases. Prices shown were current when this guide was updated.

What a biodegradable water urn is

A biodegradable water urn is made from natural materials such as salt, sand, paper or plant fiber. Placed on the water, it floats for a few minutes while the family says goodbye, then sinks and dissolves completely, releasing the ashes gently below the surface.

Nothing artificial is left behind, which is why these urns are the accepted way to release ashes at sea or on a lake or river.

The rules to know

At sea, federal rules require the release to take place at least three nautical miles from shore, which is why many families use a charter service. On lakes and rivers the rules vary by state, and on private water you simply need the owner's permission. A local provider or charter will know the requirements for your stretch of water.

Choosing the right urn

Match the urn to the setting and the moment. Fast-dissolving salt and sand urns suit an open-sea release, while floating paper and flower urns give a longer ceremony on calmer water. Check the capacity if you are releasing all of the ashes, or choose a keepsake size if the family is dividing them. Beyond that, pick the shape that feels right for the person you are remembering.

FAQ