Blue Whale
The biggest of all the animals on the planet found on land, it can be found swimming happily in the ocean.
Blue whales are known to grow to lengths of over 100 feet and could weigh more than 180 tons when fully matured. To give you an idea just how big they can be, blue whales can grow to be as long as a Boeing 737 plane, which are among the longest planes today, and weigh as much as 2,000 average men.