Visible crew/equipment: Watch the special edition version of the movie. During the scene when the crane is falling down on top of the sub, the camera is following people around the passages. When it comes to the end of a hall, and a hatch is shut in our face, we can see the shadow of the camera equipment in the door.
Trivia: The dead sailor harbouring a live crab, spooking Jammer out of his wits in the sunk submarine, is director James Cameron's younger brother Mike. The scene had to be shot several times to get it right, forcing Mike to hold the live crabs in his mouth, until the cry for "action", before releasing them. At one point he had to crush one with his teeth, as it gave him quite a bit of grief. Brotherly love immortalized.
Trivia: The fictional company that owns and operates the undersea drilling rig is called Benthic Petroleum. In Terminator 2: Judgment Day (also directed by James Cameron) after the escape from the mental hospital, our heroes hide out at a gas station. The pumps at the station feature the Benthic Petroleum logo.
Question: The last 2 times I've watched the ending, the undersea life forms send out a massive tsunami to all continents to wipe us out, only to rescind it right when it is about to strike land. I never remember this being in the original version of the movie, although I was much younger then. Was this ending changed after it was released, or was it always there? And if it was changed, why did they go with the original ending, because this new one is much better?