Nice idea, I notice several issues with collisions, when you are near to finish the first level I was swimming from the top and I didn't enter in the green cavern.
Also when you enter in the green cavern the player can go out of the gameplay.
Viewing post in Ruins of the Deep jam comments
Thx for playing the game. Game has some numerous bugs and unfinished unfrotunately. I made the game solo and couldn't finish the game on time. I'll try and finish the game in the future. I hope to make complete and polished games in the upcoming game jams, i'm working on improving my skills on Unity. I appreciate your valuable feedbacks