1. 海老, 蝦   swordfish   otter   octopus   shrimp   Hint Half-n-half Clue   2. 鮫   whale   turtle   dolphin   shark   Half-n-half Clue   3. 貝   clam   otter   swordfish   shark   Half-n-half Clue   4. 海豚 　   shrimp   whale   oyster   dolphin   Half-n-half Clue   5. 亀，海がめ   shrimp   turtle   sea urchin   oyster   Half-n-half Clue   6. 鯨   turtle   lobster   whale   shrimp   Half-n-half Clue   7. 海月,水母   clam   jellyfish   sea urchin   lobster   Half-n-half Clue