Nice little sokoban game. Good package where everything fits together. The theme obviously made me think of Spongebob plankton.
It wasn't clear to me from Level 3 that the popping give me more air so i struggled in level 4 - little animation of the bubbles, music chime, green effect on bubbles UI would have helped. Alas once I knew it wasn't a problem, so maybe just a tut message. Level 5 and so on were great balance and varied.
Really would have liked an undo button.
also came out before The Order of the Sinking Star so you the superior Sokoban