my home, the reef (2D game assets)

Game assets for the game 'my home, the reef' my team and I made in the Global Game Jam 2019.
https://globalgamejam.org/2019/games/my-home-reef
Assets have both black on white and white on black versions because, when the oil spill is in their range, they change accordingly.
Certain assets have been animated as well, but that can be seen better while playing the game.
Diversifiers used:
In Ink - use assets in only black and white (no shades of grey)
Protect the Oceans - a game that raises awareness of polluted aquatic life