The Intruder Within (1981)
The Intruder Within is a 1981 horror movie directed by Peter Carter, with a running time of 1h 31m. It stars Chad Everett, Joseph Bottoms and Jennifer Warren.
When drillers on an offshore oil rig dredge up several prehistoric eggs, one man is attacked by what appears to be an unidentified deep-sea creature protecting them. Soon, strange symptoms and behaviors become apparent among the crew and one of the creatures grows to adult-size.