Full marks for the name of an American sci-fi movie from the early 1990s!

It's a scary sci-fi film Probably at the same time as "The Fly Man". I don't know when it was shot. I vaguely remember watching it around 1994 I only remember part of the content It was about a group of scientists diving into a cave at the bottom of the sea in a submarine. The goal was to find a black box (I'm not sure if it's a black box or something else?) And then I found many eggs of strange creatures This creature is parasitic in the human body and can be transmitted from one person to another Later, when they found the so-called black box, they found that there was nothing important in it It's a person talking about an accelerator At this time, everyone realized that they had been lured here by a scientist in the team. To study these alien creatures Later, the scientist was parasitized by a mutant and died. The last scene was the one he remembered the most clearly: The cave was about to collapse, and a young man and a young woman and an old scientist finally got a chance to escape. But when he was about to escape into the lifeboat, the old scientist suddenly closed himself in the hatch. The young man and woman were shocked, and the old scientist raised his hand. A xenogeneic was crawling out of his palm. He was being parasitized! The young man and woman entered the lifeboat with tears and finally escaped Please tell me the title of this movie, thank you! This is the first horror movie I can remember watching in my life (I was only in the second or third grade of elementary school at that time)