Congrats on finishing your entry!
The music felt straight out of pokemon trading card game, so good and very nostalgic for me. I finished the game, but agree with others that perhaps levels could be a bit shorter? Maybe some story events in between to space it out more?
On a mechanics level, maybe the player could have a stamina bar for small speed boosts? Altho that does kind of counter the main mechanic of patiently getting heavier items out of the ocean...
Loved it, thank you!