Continuity mistake: When Moana is throwing sticks into the ground, after she starts singing, look back at that spot and all the thrown sticks have disappeared.
Continuity mistake: When Maui and Moana are on their way to return the stone, the base of Maui's hook is entirely on the boat. From a different angle, part of it is hanging over the edge.
Continuity mistake: When Moana is looking at the secret boats, a rock appears on the shore by the prow of one of them out of nowhere.
Continuity mistake: During the attack on the boat, it's jerked upwards, a hatch is opened, stays open, and Hei Hei falls in. Seconds later, from a different angle, the hatch is now firmly sealed again.
Continuity mistake: After the chief stops his mother telling scary stories, pictures drop behind the kids. The one to the left of the one of Maui has three creatures with spiky heads. After the chief is knocked over we see those pictures again, and the one of three creatures has been replaced by one of an island with a cloud above it.
Continuity mistake: Maui steals a stone from TeFiti, turns into a bird, then lands on a raft with his hook in his hand. He looks at the stone, and when the shot changes back, his hook has disappeared.
Continuity mistake: After Moana narrowly escapes drowning, she drags herself ashore next to some debris from a boat, one large piece especially, being by her right hand. After the pig runs away, she's not moved, but the debris around her has changed, and the large piece has disappeared.
Continuity mistake: After the sea retreats from Moana, a fish gets stranded by a shell and flaps its way back into the water, leaving a noticeable mark in the sand. As Moana approaches the shell in a different angle, the sand around it is undisturbed.
Continuity mistake: Moana ushers a turtle back to the ocean using a large green leaf. She then goes towards the ocean to get a shell, and in the reverse angle the leaf has disappeared.
Chosen answer: There's a sign he had tools for sculpting a statue of himself from solid stone, though we never see the sculpting tools. Given the fact that he wants food and isn't dead, it's safe to assume he also had some tools available for fishing.