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Tragic Titan submersible’s $62 SanDisk memory card found undamaged at wreckage site
(www.tomshardware.com)
This is a most excellent place for technology news and articles.
Encrypted. Was a whole thing to recover the keys from a damaged board, only to find old videos and photos from previous dives.
Apparently they were streaming the video to the inside of the sub, so it wasn't saved to that card.