The sea, on the edge of the ocean, is a subsidiary part of the ocean. The area of the sea accounts for about 11% of the ocean. The depth of the sea is relatively shallow, with an average depth ranging from a few meters to two to three kilometers.
There are 5 oceans in the world, namely, the Pacific Ocean, the Indian Ocean, the Atlantic Ocean, the Arctic Ocean, and the Southern Ocean. The Pacific Ocean is the largest and the Arctic Ocean is the smallest.
The sea actually formed a cloud when a volcano erupted for the first time in the history of the earth due to too much water vapor. After that, it rained for thousands of years and merged into the sea.
The ocean is a cornucopia of mineral resources. After the "international 10-year marine exploration stage" in the 1970s, mankind has further deepened the understanding of the types, distribution and reserves of marine mineral resources.
The sea is the ocean. In fact, there are some differences between the sea and the ocean. The distinction between sea and ocean: The vast ocean, from blue to turquoise, is beautiful and spectacular. The sea, on the edge of the ocean, is a subsidiary part of the ocean. The area of the sea accounts for about 11% of the ocean. The depth of the sea is relatively shallow, with an average depth ranging from a few meters to two to three kilometers. The sea is close to the continent and is affected by the continent, rivers, climate and seasons. The temperature, salinity, color and transparency of the sea are all affected by the land and have obvious changes.