The reason for the underwater ejection trials in 1962 were at least in no small part due to the circumstances of Cdr Russells death. I understand that underwater ejections have also been done from at least a Wyvern and F8 Crusauder.

Note with Cdr Russells incident the canopy was open when the SAR arrived. Russell took his helment off and throw it away. The SAR prepared to winch someone down but before this could happen the aircraft pitched forward, which closed the canopy and the arcraft went down nose first. No divers were present on the SAR so they could not follow the sinking A/C. Both A/C and Russell were recovered some time later. The final report bamed a failure of some of the seat straps to release. There should be some film of the whole thing around somewhere.