Corrected entry: At the end of Maui's song "You're Welcome", he tricks her into entering the cave and then proceeds to slide a huge rock to the entrance so she can't get out and stop him from stealing her boat. Surely, he knows she would soon die of thirst or starvation in there as she is a "mortal"? She is only able to get out through luck and her skills. A bit concerning really.
Corrected entry: As Moana lands her boat on the island's shore, Hei Hei the chicken falls onto the sand and starts to walk into the water. An ocean wave pushes him back toward the shore. In the long shot, several people are approaching the boat but the chicken has vanished.