Sharing these bobbles I used in my fishing game. I used the first row of sprites while the player was waiting, and the second row of sprites when a fish was hooked.

I used the sprites on a blue background with the following ocean spritesheet in my fishing game:

https://opengameart.org/content/animated-ocean-water-tile

Game link:

https://play.google.com/store/apps/details?id=com.happygo.nksy.hgf