And the Award for Biggest Animal on Earth Goes to …

The Blue Whale! We know little about these gorgeous animals, as they spend most of their lives in the deep sea. We do know that they may live as long as humans, and that they weigh about four times more than the heaviest known dinosaur ever did. For more fun facts, turn to card #55 of our “Monsters of the Deep,” and watch the below video to see these graceful, yet enormous, creatures in action: