1. むらさきかい   manatee   jellyfish   eel   mussel   Hint Half-n-half Clue   2. へび   snail   shrimp   lobster   starfish   Half-n-half Clue   3. いるか   dolphin   snail   shark   swordfish   Half-n-half Clue   4. めかじき   swordfish   eel   oyster   sea urchin   Half-n-half Clue   5. ひとで   starfish   lobster   dolphin   eel   Half-n-half Clue   6. うに   starfish   sea urchin   otter   crab   Half-n-half Clue   7. かめ、うみがめ   oyster   otter   turtle   sea urchin   Half-n-half Clue