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