Visible crew/equipment: Lighting equipment is seen on Trevor's sunglasses just as he finishes speaking in his Mandarin voice. (00:03:30)
Continuity mistake: When we first see the male volcano, he is an entire island with trees and forests. After many years have passed and sinks into the ocean, it can be seen the trees and forests have now gone. However, after he spews out of the ocean and is together with the female volcano, the male volcano suddenly has trees and forests around him again.