Goof (continuity error): The rear wheels of the Ark are a different design when the Ark is moving, than when it is not moving.
Goof (audio/visual unsynchronized): When Gideon stands outside Jonah's cell, the words "Hello, Jonah" are heard, but Gideon's mouth never opened to speak them. That dialogue was dubbed in later.
Goof (continuity error): The ARK II Log entry opening this show is 76, but the closing entry is 68. The opening entry's numbers presumably were transposed from 67.
Goof (crew or equipment visible): In the beginning of the episode when Ruth drives off to follow the cougar she spotted there is a shot of her from the side. Out of focus in the background can be seen cars and equipment, probably picnic tables and such from the campground in the state park where much of the series was filmed.
Goof (revealing mistake): The scene of the children standing up and stepping over the log to walk towards Brack differs from the very same scene replayed following the fade to black (for a commercial insertion). In the first, Caleb walks in the center, in the replay, Caleb goes to the left around Aaron.