Hello everyone, I got a tip that this is the place I might get some help.

there's an old DOS game I used to play when I was young, about 20 something years ago. and since I didn't knew English at the time I couldn't know the names of the games I was playing.
It's a game where you play a Diver (in one of those old diving suits with the metal helmet and the round viewing glass, I don't think there's a word for it in english).
The game is in Isometric view and takes place in what I presume is an old wreckage of a ship. you need to walk from room to room (all the rooms are square), solve some puzzles and avoid fish swimming your way and stuff like that... I remember the color pallet is mostly blueish, green, and azure and you can carry little balls and triangles which you can place on the ground (hope my memory doesn't fail me with the details because I didn't really know what they were for). you can also jump but not attack. I don't think there are many old diving games, I even tried browsing through all I could find but with no success...
Is there any chance you know what the name of the game is? I'm sure you're aware how frustrating it is not knowing what was the name of something from your past just because of language barrier...

Thanks in advance,
Rotem