Here's another rather sad sea burial you may or may not have read about :
Loyce Edward Deen, an Aviation Machinist Mate 2nd Class, USNR, was a gunner on a TBM Avenger.
On November 5, 1944, Deen's squadron participated in a raid on Manila where his plane was hit multiple times by anti-aircraft fire while attacking a Japanese cruiser. Deen was killed. The Avenger's pilot, Lt Robert Cosgrove, managed to return to his carrier, the USS Essex.
Both Deen and the plane had been shot up so badly that it was decided to leave him in it.
It was the only time in U.S. Navy history (and probably U.S. military history) that an aviator was buried in his aircraft after being killed in action.