A pretty incredible atmosphere! These sharks are both funny and scary xD! But above all, the diving perspective is very gripping and immersive.
I've read your devlog and I think you're being a bit hard on yourself. In any case, I'd like you to know that I really enjoyed playing this game and found the gameplay very original.
Finally, it's possible to post a game that exceeds 3 hours. You may not be able to compete for the official 1st place, but is that really the point? In any case, I know that there are a lot of people here (myself included) who sometimes want to create a game in 3 hours and end up making a game in half a day :D That doesn't stop us from posting the game and assuming that we've well exceeded the time limit. At least people are playing and commenting on our game, which seems to me to be one of the aims of any game jam.
Anyway, congratulations again on your game!