World Oceans Day originated from the 63rd United Nations General Assembly, which determined June 8 every year as “World Oceans Day”. United Nations Secretary-General Ban Ki-moon pointed out that the ocean is paying a heavy price for human activities, and individuals and groups have the obligation to protect the marine environment and carefully manage marine resources.
“97% of the 1.3 billion cubic meters of water on the earth’s surface is concentrated in the ocean. The ocean, with an average depth of 3,700 meters, occupies 71% of the earth’s surface. Human beings thrive on the continent, but the ocean is far away from us.” I arrived in the mythical world … Once you see the truth of the ocean through the kilometers of water, when you look back, you will understand the truth of the continent beneath you.
Deep water (black) with a depth of more than 2000 meters covers 84% of the oceans and 60% of the Earth’s surface. This is a passage written by Wang Pinxian, a famous marine geologist and academician of Tongji University, on the back cover of his popular science monograph “A Brief Talk on the Deep Sea”. He said: “The average depth of the world’s oceans is 3,700 meters. Sunlight can only enter the top layer, and the depth is less than 200 meters. 95% of the ocean is a dark world.”
The “exotic flowers and plants” in the deep sea world are actually corals, sponges, sea anemones, crinoids and other animals. There are too many secrets hidden in the dark and boundless deep sea. The largest mountains and deepest trenches on Earth are in the deep ocean. The deep sea is rich in natural resources and biosphere resources; it is also a key part of the Earth system that humans know little about.