1. ostrica   oyster   sea urchin   otter   shrimp   Hint Half-n-half Clue   2. polpo   mussel   seal   octopus   manatee   Half-n-half Clue   3. gamberetto   starfish   clam   octopus   shrimp   Half-n-half Clue   4. pesce spada   manatee   dolphin   shrimp   swordfish   Half-n-half Clue   5. tricheco   manatee   snail   otter   oyster   Half-n-half Clue   6. riccio di mare   octopus   otter   sea urchin   lobster   Half-n-half Clue   7. delfino   manatee   starfish   dolphin   turtle   Half-n-half Clue