40 Biggest Creatures Ever Spotted on Camera: Giant Anima ls That Look Unreal 1. Blue Whale The blue whale is the ultimate giant of the natural world. It is the largest animal known to have ever lived, with verified individuals reaching about 33 meters in length. Seeing one beside a boat makes the enormous scale of this marine mammal easier to appreciate. 2. Fin Whale The fin whale is another ocean giant capable of reaching roughly 20–27 meters. Its long, streamlined body has earned it a reputation as one of the fastest large whales. 3. Sperm Whale The sperm whale is the largest living toothed whale. Its enormous head can make up a substantial portion of its body, creating an extraordinary silhouette when it surfaces. 4. Humpback Whale Humpback whales can reach around 18 meters and are famous for breaching, tail slapping, and spectacular underwater behavior. A large humpback emerging beside a boat can appear enormous. 5. Bowhead Whale The bowhead whale is a heavy Arctic whale with a ma...