Its a 2d fishing game, similiar to Ridiculous Fishing. You catch what i think are procedural generated "fish", that looked more like skeletons i think because they were generated by white lines (i think). They got bigger and bigger the deeper you go.
Game also had a story, and a somber ending. Thats all i can remember.
Must of came out about 10 years ago, so if anyone remembers, thank you!