Hi, 10 years ago I saw a movie, that I don't remember the name of now..
It really bothers me.. I thought it was called "THE DEEP" but it turned out
That wasn't the movie. Here's what I remember from the plot:

Bunch of scientists go to this facility deep down the bottom of the ocean..
One of them gets bitten by this spider like creature.. Then they all slowly
Start turning into monsters.. Only this woman makes it to the surface alive in the end.

What's it called?

Thanks in advance...

Jens

Are you talking about the thing? http://www.imdb.com/title/tt0084787/

Sounds like,.

Leviathan (89)

The movie's like an aquatic version of The Thing
A monster that spreads itself through the crew of
An isolated research base like an infection. In this
Case they're at the bottom of the ocean.

view trailer (http://www.youtube.com/watch?v=V7FskSqAQis)

Thank you straydog, that's it!