The Caspian Sea is the largest lake on Earth, and it is located between Asia and Europe. However, it is salty, not fresh. The largest freshwater lake in Asia is Lake Baikal.
The South China Sea, which has an area of 3,500,000 km², is the largest sea. The next largest is the Mediterranean Sea, with an area of 2,500,000 km² . The world's largest inland sea is the Caspian Sea, with an area of about 371,000 km².
Antarctica is the fifth largest continent of the seven continents on earth. The Southern Ocean that surrounds the continent is the fourth largest of the five oceans on earth.
The biggest sea mammal on Earth is the blue whale. They can grow to one hundred feet long and 210 tons. In fact, they are the largest animals in the world, and the largest to have ever existed.