1. 砂   sand castle   sand   swimsuit   surfboard   Hint Half-n-half Clue   2. 波   swim   wave   sea   shore   Half-n-half Clue   3. 救護員   lifeguard   swimming trunks   sea   swim   Half-n-half Clue   4. 泳ぐ、水泳する   swimsuit   lifeguard   swim   swimming trunks   Half-n-half Clue   5. 波乗り板   swimming trunks   lifeguard   surfboard   sea   Half-n-half Clue   6. 砂の城   swimsuit   sea   sand castle   wave   Half-n-half Clue   7. 海   swimsuit   sea   lifeguard   sand   Half-n-half Clue