I'd compare it with going into space, there are a lot of similarities: the level of risk, the technical challenges, the opportunities for scientific research, the risk of death, the reality that you'll die a horrible death if you try and leave the vessel, monsters, alien species*, nobody can hear you scream etc.
But I guess implosion is more likely than explosion.
*there's still a lot of unidentified deep sea life
I'd compare it with going into space, there are a lot of similarities: the level of risk, the technical challenges, the opportunities for scientific research, the risk of death, the reality that you'll die a horrible death if you try and leave the vessel, monsters, alien species*, nobody can hear you scream etc.
But I guess implosion is more likely than explosion.
*there's still a lot of unidentified deep sea life