Possible Clues:

• Vacation destinations
• Unlike 14 down, they exist only in water
• Oahu and Maui, e.g.
• You get them in water
• 16 down would be just a little like them
• There is a pound of them, and in the water
• That lass makes a din when they're in the water
• Land masses with water on both sides
• Montreal and others
• This is property in water for them