Solve the Mystery of an Old DOS Game

[fluidistic]

Hi guys!
When I was about 6-7 years old (around 1993-1994), I used to play to some DOS games in my aunt's house. I've sucessfully recovered the names of some of them (like the sleepwalker) but I'm stuck at finding the name of one of them that I liked.
All I remember is that at start we are on a boat and the goal is to find a threasure underwater. We had 3 lives. We could lose a life by some shark and probably other creatures in the ocean and maybe by lack of oxygen.
The view was: at top of the screen was the separation between air and water and the further toward the bottom of the screen, the deeper into the ocean.
We could go left and right and then the whole screen would change in a similar way than in Prince of Persia game (DOS) and also probably if we went deep into the ocean too but I'm not 100% sure.
Does this sound familiar to any of you?
Thank you.

 

[jedishrfu]

You might find it here if we can't guess it.

http://www.dosgamesarchive.com/

but I did find this ebay reference to Sea Rogue:

http://www.ebay.com/itm/1992-SEA-ROGUE-SUNKEN-TREASURE-GAME-DOS-PC-BOX-MANUAL-/190507052974?item=190507052974&ViewItem=&nma=true&si=maP9OdMmOBOxTgVOPO96QSslaDs%3D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557

 

[fluidistic]

You might find it here if we can't guess it.

http://www.dosgamesarchive.com/

but I did find this ebay reference to Sea Rogue:

http://www.ebay.com/itm/1992-SEA-ROGUE-SUNKEN-TREASURE-GAME-DOS-PC-BOX-MANUAL-/190507052974?item=190507052974&ViewItem=&nma=true&si=maP9OdMmOBOxTgVOPO96QSslaDs%3D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557

Thank you very much. After reading the description, it definitely looks like it was the game I was looking for. Too bad there's no video of it on youtube though!