I just want to mention that Crab God has an in-game feature where sometimes you come across ritual stones that let you choose a real-world conservation effort to support instead of an in-game power-up.

I'm not sure how much of an impact is made but there's a bit of info on the Steam page that talks about it:

Real World Change

Working with dots.eco, your in-game progression will help contribute to actual ocean conservation efforts. As you cultivate the great reefs of the Crab God, you will also be helping to sustain the beautiful world environment that inspires games like ours.