Mushrooms Mutants and Fish

Made for Mix Jam 4 in under 48 hours with the 3 random prompts: Mushrooms Mutants and Fish

You are a fish. Survive as long as possible against an unstoppable infection of Mushrooms and Mutants as they attempt to take over the ocean.

Can you beat my high score of 170,000 points?

(This is my first ever finished game)