Aqua Kitty: Milk Mine Defender DX

Due to a sudden shortage of milk, cats around the world are forced to seek out new sources to get their fix. You and your team of milk mining kittens have overcome a fear of water to drill down under the ocean seabed and begin extracting vast reserves of what seems to be naturally forming, full-fat milk. You have to blast your way through hordes of mechanical sea monsters in your powerful kitty submarine and defend the deep sea milk mining kittens! The core to your survival is managing the submarines secondary turbo-fire. It has limited energy but recharges itself between uses and gets upgraded as you progress through the game. There are various pickups to collect to help you out, dropped by special speedy gold and silver fish which you must chase down. The type of pickup dropped depends on the sea depth they are at, so keep an eye on the color of the indicator eye of those particular fish when shot.

Source: TheGamesDB