And THAT, my friends, is why you don't take an experimental piece of equipment down to a depth where you can be crushed like a bug in an instant.
This should be the end of Titanic tourism.
The sad part is that the world has lost a Titanic expert in the process. Nargeolet knew a lot about the wreck itself. That's a great shame.
The other 4, I don't give a shit about. If you are the guy who builds an experimental sub, ignoring advice of experienced submariners in favour of "younger" people../?