The Earth is covered by five major oceans: Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern Ocean, and Arctic Ocean. These vast bodies of saltwater play a crucial role in regulating the planet's climate and supporting diverse ecosystems. Each ocean has unique characteristics and significance. For instance, the Pacific Ocean is the largest and deepest, while the Atlantic Ocean is known for its historical importance in trade and exploration. Together, these oceans are vital for global weather patterns, marine life, and human activities.