From the largest shark to ever roam the oceans to a giant ground sloth, we take a look at 10 extinct animals that may still be alive.These animals are really really huge. You will definitely shock to watch these animals. No one ever wish to face any of these animals. Just watch full video below and share anything about this.Yes, families of 60 feet sharks are roaming the ocean undetected. Same for mammoths! Their walking across white snow undetected by drones, satellite photography, etc. These amazing masters of camouflage have eluded all efforts to discover their whereabouts. Bigfoot, Loch Ness monster, aliens. They are all masters of hiding or how to not be seen (Monty Python, you know).