Great work, little tips for the future tho:
-Its just overly simple. Dive down go really slow skim to the border get all the treasure go back up… not fun.
-Charachter visual looks like a very serious prototype not final. Keep it simple! I get it you want to overachieve! Just dont, its a game jam!
-Screensize doesnt fit properly, not sure if intentional.
-Overcomplicated UI, too much unnecessary text and values that dont really matter for what you are trying to achieve, a diving adventure game.