I love how the screen expands to fill the whole webpage, with no noticeable scaling artifacts. Second game I've seen doing it this jam, and I will learn how; it is peak.
I followed the instructions and collected as many as I could, returned to the surface with 10% health, skimmed along the top; nothing. It is a safe zone. So I returned to the depths to die and hope for a score. I need a score to know if I am improving.
Those fish are evil. Very atmospheric. Nice shading.