Really atmospheric take on the theme — the pitch-black trench with aigc introducing itself as a "living sonar" is a lovely BUDDY read, and the weighted, thruster-less space-glide gives the descent a genuinely distinct, floaty feel. The "you can't bring everything back up" extraction twist is a strong hook. My one honest note: the momentum makes lining up on the oxygen bubbles tricky early on (I bounced around a while at O2 0/2), so a touch more starting glide-control or a slightly larger pickup radius on the first bubble would help newcomers land that first breath before the pressure sets in. Nicely done for 72h! (I made DEEP, a dive-into-darkness entry with a light-buddy — would love your thoughts if you get a chance.)