Possible Clues:

• Swimming, for the most part?
• By and large, where to find water
• Where those who walked the plank finished, usually
• Frankfurters may be dipped here, for the most part
• Floating at sea, for the most part?
• Generally where the seas are high
• Where cod and haddock may be found, generally
• Where ocean liners travel, mostly
• Mostly
• Generally at sea