1. foca   dolphin   seal   whale   eel   Hint Half-n-half Clue   2. delfín   eel   otter   dolphin   starfish   Half-n-half Clue   3. ostra   otter   manatee   swordfish   oyster   Half-n-half Clue   4. mejillón   dolphin   sea urchin   crab   mussel   Half-n-half Clue   5. ballena   turtle   whale   otter   eel   Half-n-half Clue   6. tortuga marina, carey   turtle   octopus   lobster   clam   Half-n-half Clue   7. erizo de mar   eel   swordfish   jellyfish   sea urchin   Half-n-half Clue