1. 蝦   lobster   turtle   dolphin   snail   Hint Half-n-half Clue   2. 蛸   snail   swordfish   octopus   whale   Half-n-half Clue   3. 獺   whale   otter   lobster   sea urchin   Half-n-half Clue   4. 海豚 　   shrimp   shark   otter   dolphin   Half-n-half Clue   5. 海月,水母   lobster   whale   jellyfish   swordfish   Half-n-half Clue   6. 亀，海がめ   octopus   turtle   swordfish   whale   Half-n-half Clue   7. 海胆、 雲丹   whale   octopus   sea urchin   shrimp   Half-n-half Clue