1. クジラ   oyster   snail   otter   whale   Hint Half-n-half Clue   2. カニ   dolphin   crab   starfish   manatee   Half-n-half Clue   3. クラゲ   octopus   jellyfish   manatee   swordfish   Half-n-half Clue   4. タコ   shark   swordfish   octopus   snail   Half-n-half Clue   5. ヘビ   shrimp   snail   manatee   whale   Half-n-half Clue   6. エビ   sea urchin   lobster   dolphin   jellyfish   Half-n-half Clue   7. ウニ   crab   dolphin   sea urchin   snail   Half-n-half Clue