Submergence

Submergence is a game in which you navigate a submarine vessel through deep underwater caves in order to collect rare fish species. 

Your goal is to collect 5 different species of fish, and return to the starting pod, and dock. 

Keys: 

WSAD or arrows - move

Space - catch fish. 

L  - Toggle lights (not in game functionality) 

The vessel picks up inertia pretty fast so be careful, slow navigating is the best way to complete the game. 

Recommended to not play full screen as game is unoptimised.