(10/12) Something's In The Sea

Marooned in the middle of the ocean after a plane crash, you are offered a deal by a mysterious artefact -  search the nearby ocean depths for its scattered shards, and in return, it will lend you its power. But many questions are yet to be answered - why were the pieces scattered in the first place? What is the artefact's agenda? And what is that strange stirring from the abysmal depths? The tenth game in my 12 games in 12 months Dev Diary challenge.