When Michael attacks Cassandra on the beach, it is sunny with blue skies. He then chases her into the trees and is suddenly overcast and raining quite heavily.
Jacob is attacked by velociraptors, but later when he's found by Ava he has no visible wounds from a dinosaur attack on him.
The unknown, uninhabited island a mere two day sail from the mainland has visible plowed fields in a drone shot.
Despite the island being uninhabited, you can clearly see houses in the background of shots at the lakeside.
The group anchor their boat before coming ashore, but while they are on the beach, it is still quite clearly moving behind them.
The weather changes mid scene sometimes.
The animator mistook a dinosaur's ankle for a second knee, leading to a bizarre double-kneed leg that makes the T-Rex walk cycle strange and uncomfortable to watch.
From the very beginning, the audio runs nearly a half minute later than the closed captioning.
The ship has barely set sail, and the mainland is still visible behind the actors when they pick up a distress signal. A signal that no one on land picked up. A signal that would lead them to the unknown island only a two day sail from the mainland.