1. Fastest fish   Eel   Cosmopolitan Sailfish   Bluefin Tuna   Shark   Swordfish   Hint Half-n-half Clue   2. Fastest marine animal   Sperm Whale   Killer Whale   Squid   Shark   Dolphin   Half-n-half Clue   3. Most contagious disease   Malaria   AIDS   Common cold   Tuberculosis   Leprosy   Half-n-half Clue   4. Fastest flying bird   Peregrine Falcon   Kingfisher   Seagull   Kite   Eagle   Half-n-half Clue   5. Longest snake   King Cobra   Reticulated Python   Anaconda   Viper   Boa Constrictor   Half-n-half Clue   6. Longest cells in the human body   Nerve Cells (Neurons)   WBC   Megakaryocyte (blood cells)   RBC   Brain Cells   Half-n-half Clue   7. Largest land animal   Elephant   Hippopotamus   Rhinoceros   Lion   Giraffe   Half-n-half Clue