1. 砂の城   swimming trunks   wave   sand castle   swim   Hint Half-n-half Clue   2. 岸   sand castle   surfboard   sand   shore   Half-n-half Clue   3. 泳ぐ、水泳する   shore   surfboard   swim   wave   Half-n-half Clue   4. 海   surfboard   wave   swimsuit   sea   Half-n-half Clue   5. 貝   surfboard   wave   sea   shell   Half-n-half Clue   6. 波乗り板   swimming trunks   lifeguard   sand   surfboard   Half-n-half Clue   7. 水泳パンツ   swim   swimming trunks   sea   wave   Half-n-half Clue