Errores

Kitty massages Jack's right leg just after he bangs it. However, when they are talking, the leg left is the injured one.

Water in the pool becomes instantly still after the old men get out of it the first time.

When the four men are hiding in the pool closet and the Anterians come into to put the day's haul of cocoons into the pool, the tile floor is completely dry, though the men had just exited the pool moments before, dripping wet.

The sweets Jack drops to the floor vanish.

When Ben Luckett is fishing with his grandson near the end, there's a large water spot covering the leg of his pants in the wide shot. When they push in to a medium shot, the spot is gone.

As Ben starts his car, it makes the distinct sound of an older Chrysler when he's driving a Cadillac.

Incorrectly regarded as a goof: Many fans wonder why marine animals who swam in proximity to the buried cocoons didn't draw from their life force while they remained in the ocean. However, Walter actually "jump-started" the life force within the cocoons once they were transferred to the pool house. He performs this task after igniting the light within them using his illuminated hand. Only then were the others able to benefit from their healing properties.

When the old folks all invade the pool house, there is a fellow on the deck of the pool trying to crack open the cocoon. A few seconds earlier, that same fellow is in the middle of the pool when Walter catches everyone. The fellow is subsequently in two places at the same time.

Obvious stunt double when Arthur Selwyn is break dancing.

When Wilford Brimley and Maureen Stapleton are driving in the Cadillac and Brimley asks Stapleton if she has second thoughts about the trip into outer space, you can see the AAA sticker on the rear view mirror is upside down.

Obvious stunt double for David when he jumps from the jetty to the boat.

When Joe, Bernie, and Art are in the dining room, the piano player's movements don't come close to matching the music being played.

During the boat escape, the shadow of a camera and the cameraman is seen on Wilford Brimley, Maureen Stapleton, and Barret Oliver.

The elderly people are able to draw energy from the cocoons by swimming in the pool where they're being kept. But since the cocoons had been resting at the ocean floor for centuries, then wouldn't the fish and other organisms swimming in close proximity have drawn this energy long before the cocoons were extracted from the ocean? If so, then there would be no way for the elderly people to receive energy transfers from the cocoons.

Florida has capital punishment. Jack would have used every penny given him by Walter on a defense team and would have been executed "dead broke."

When Bernard Lefkowitz is arguing with the other about visiting the "lifepool", he states that Dutch Shultz visited his store in 1948. Dutch Shultz was shot and later died at a hospital after lingering 22 hours on October 24, 1935.