The ocean is the main body of the earth, the cradle of life, and the source of human civilization. The Earth's surface is divided into land and ocean. Using the geoid as a baseline, the land area covers 29.2 per cent of the total surface area and the ocean area occupies 70.8 per cent of the total surface area. The ratio of land to sea area is 2.5:1. The world's oceans are usually divided into four major parts, namely the Pacific Ocean, the Atlantic Ocean, the Indian Ocean and the Arctic Ocean. The vast ocean contains very rich marine living resources, and some people estimate that the ability of the ocean to provide food to human beings is equivalent to 1,000 times that of the world's land arable land.
Located in the southeast of the Asian continent, China dominates the western side of the North Pacific Ocean, with a total length of 18,000 kilometers of coastline and claims jurisdiction over an area of about 3 million square kilometers. The adjacent sea has a unique regional oceanographic characteristics because of its wide continental shelf and complex topography, spanning three climatic zones of temperate, subtropical and tropical, with obvious alternating seasons and variable coastal runoff. China's marine biodiversity is abundant, and the coastal waters have mangroves, coral reefs, coastal wetlands, seagrass beds, islands, bays, and estuaries of seas and other types of marine ecosystems.
Marine ecosystems are the most important ecosystems in the world, affecting the stability and security of global ecosystems, and human survival and its economic, political, cultural and social development are closely related to the oceans. While supporting social and economic development, the marine ecological environment is under tremendous pressure.
Due to the vast ocean space, some people think that the ocean has unlimited self-purification ability, but marine scientific research proves that the marine environment is also an ecosystem of limited intensity, and because the ocean communicates with each other, the dynamic factors are extremely complex, and local sea pollution may gradually spread to the world, and may even cause long-term harm to the global ecological environment.
In July 2016, UNESCO's Intergovernmental Oceanographic Commission (IOC) published a study on the current state of the world's large marine ecosystems, saying that increasing climate change and human activities are causing the state of the world's large marine ecosystems to be worrying. From 1957 to 2012, sea temperatures continued to rise in 64 of the world's 66 large marine ecosystems. In terms of plastic pollution, there is a high risk of pollution in the waters of East and Southeast Asia, the Mediterranean Sea and the Black Sea. In terms of seawater eutrophication, 21% of large marine ecosystems will be at risk of eutrophication by 2050, mainly in East Asia, South America and Africa. In addition, more than 50% of global coral reefs are threatened, and this proportion will reach 90% by 2030.
If you want to lead your children to learn more about the ocean in parent-child time, go to Himalaya FM to listen to "Little Killer Whale Tommy", and in the heavily polluted Mandala Strait lives the Little Killer Whale Tommy family, and they have a close relationship with their only neighbor, the Jaw family. The living environment is getting worse and worse, and the Tommy family's attitude towards life is still positive and optimistic.
However, with the difficulty of hunting, the departure of neighbors, and the desire to find their family, the Tommy family eventually embarked on a journey to find a new home. During the migration journey, Tommy meets many marine creatures he has never seen before, not only does something interesting happen that increases his sightings but also meets new friends. "Little Killer Whale Tommy", in the process of advocating parent-child companionship, should also have a better understanding of the knowledge of the seabed and trigger thinking about marine pollution.
Himalaya FM, China's number one audio platform, has 370 million registered users. "Little Killer Whale Tommy", the most popular underwater adventure fairy tale of 2019, was loved by users during the time when the Himalayas was launched, and became the best parent-child time for parents and children to listen to stories together every day. The powerful combination of the two not only set off a new wave of knowledge payment, but also sent benefits to the general audience.