1. 游泳   shore   lifejacket   lifeguard   swim   Hint Half-n-half Clue   2. 海   pail   shore   sea   sea gull   Half-n-half Clue   3. 铁锹   sea   sea gull   shore   shovel   Half-n-half Clue   4. 毛巾   wave   towel   shell   shore   Half-n-half Clue   5. 海鸥   sea gull   swim   shell   towel   Half-n-half Clue   6. 壳   swim   shell   lifeguard   swimsuit   Half-n-half Clue   7. 岸   lifejacket   shell   sea   shore   Half-n-half Clue