Burial at Sea – From a Cruise Ship?Yes, you can scatter ashes at sea, but it takes planning. Cruise lines require permission plus death and cremation certificates, and ashes must be in a biodegradable urn. Guest Services will schedule a private moment for your family, and some lines even give a certificate with the date and coordinates.Only biodegradable petals or wreaths are allowed—no plastic or balloons. Flying with ashes? Use a TSA‑friendly urn and never check it.A little planning makes this