missing submarine: No food or water, it's designed to dive, look around and return to surface

[ForgedCrank]

5. This is

one of those things that just captivates people, it's a terrifying thought.
This is something I would have jumped into head-first in my younger days. But now? I've seen many of the terrible ways in which people can die, and especially how unforgiving the ocean can be, so no thanks.
Let's hope it just lost it's connection, surfaced somewhere, and is floating around waiting to be spotted, which has apparently happened before about a year ago.