1. katatsumuri   snail   octopus   mussel   dolphin   Hint Half-n-half Clue   2. kaki, shinjugai   crab   oyster   lobster   eel   Half-n-half Clue   3. same   shark   clam   octopus   shrimp   Half-n-half Clue   4. ebi   jellyfish   snail   manatee   shrimp   Half-n-half Clue   5. hitode   starfish   crab   oyster   whale   Half-n-half Clue   6. mekajiki   manatee   snail   swordfish   otter   Half-n-half Clue   7. ebi   lobster   mussel   dolphin   clam   Half-n-half Clue