Possible Clues:

• Lake inside coral reef
• Encouraging words supporting short boy in shallow lake
• Fall behind duck on lake
• Body of salt water cut off from the sea
• Polynesian inn locale, maybe
• Blue or black water of filmdom
• Mermaids' home in Neverland
• Get behind second in command on stretch of water
• Blue setting for Shields, once
• Proceed east of coastal city to find calm water