1. 海豚 　   dolphin   shark   shrimp   whale   Hint Half-n-half Clue   2. 海胆、 雲丹   oyster   jellyfish   octopus   sea urchin   Half-n-half Clue   3. 鮫   octopus   jellyfish   otter   shark   Half-n-half Clue   4. 海月,水母   jellyfish   otter   snail   octopus   Half-n-half Clue   5. 海老, 蝦   shrimp   snail   oyster   lobster   Half-n-half Clue   6. 蛇   shark   lobster   snail   sea urchin   Half-n-half Clue   7. 陳   octopus   swordfish   otter   jellyfish   Half-n-half Clue