Just a bit of context, the card was outside the sub and built into a camera that was rated for that depth.

Scientists were already able to recover footage of their final moments on the SD card

https://youtu.be/Bu8bH2P37kY

Too bad they can’t make the whole submarine out of a SanDisk card

Scott Manley just did a video on the NTSB report, it has good details on the card.

https://www.youtube.com/watch?v=qMUjCZ7MMWQ