1. へび   crab   jellyfish   snail   lobster   Hint Half-n-half Clue   2. がい   starfish   clam   otter   swordfish   Half-n-half Clue   3. ひとで   turtle   starfish   swordfish   lobster   Half-n-half Clue   4. たこ   clam   otter   dolphin   octopus   Half-n-half Clue   5. かき, しんじゅがい   sea urchin   oyster   whale   otter   Half-n-half Clue   6. かわうそ   lobster   starfish   otter   oyster   Half-n-half Clue   7. かに   octopus   eel   shark   crab   Half-n-half Clue