I remember being entrenched (pardon the pun) when James Cameron did the deep dive into the Mariana Trench. The depth of the trench is truly amazing, more than 3x where the RMS titanic sits.
The ocean is its own monster and deserves the utmost respect.
James did his shit with real experts watching over the mission.... and a Submarine that
wasnt put together with home depot shit and a game console...