The planet known for its blue color and often called the "Blue Planet" is Earth. This designation comes from the vast expanses of water that cover approximately 71% of its surface, giving it a striking blue appearance when viewed from space. Earth is unique in its ability to support life, thanks in part to its suitable atmosphere and liquid water. It has diverse ecosystems, ranging from oceans to forests and deserts. The blue color is not only a defining characteristic but also a reminder of Earth's abundant natural resources and the importance of environmental conservation for future generations.