None.

A sailor attempts to catch some fish with a net, only to get interrupted by a mermaid.

A heavenly king shoots at a sailor. The sailor almost drowns to death, and his boat is burned.

A man and a lobster fight.

None.

Some children may find the heavenly king somewhat frightening because of how he tends to shoot lightning at others in a few scenes.

The ending could be little bit sad for some children.