Ocean Trivia Why
The ocean covers 71% of the earth's surface and contains countless mysteries and unknowns. In recent years, with the improvement of environmental awareness and the development of science and technology, ocean topics have frequently appeared in hot searches. The following are ocean-related topics that have been hotly discussed on the Internet in the past 10 days, as well as knowledge questions and answers around "why", presented to you using structured data.
1. Popular ocean topics in the past 10 days
| Ranking | topic | Hot search platform | Number of discussions (10,000) |
|---|---|---|---|
| 1 | The subsequent impact of Japan’s nuclear wastewater discharge into the sea | Weibo, Douyin | 1200+ |
| 2 | New species "transparent octopus" discovered in the deep sea | Station B, Zhihu | 680 |
| 3 | Global coral reef bleaching crisis intensifies | Twitter, WeChat | 550 |
| 4 | Antarctic glaciers melt at record rate | Toutiao, Kuaishou | 490 |
2. Questions and Answers on Marine Knowledge
1. Why is sea water salty?
The salty taste of seawater comes mainly from minerals in terrestrial rocks and soil. When rainwater washes over land, it carries sodium and chloride ions into rivers and eventually into the ocean. After billions of years of accumulation, the salinity of seawater has stabilized at about 3.5%.
| Main salts | Proportion | Source |
|---|---|---|
| sodium chloride | 85% | terrestrial rock dissolution |
| Magnesium sulfate | 8% | Undersea volcanic activity |
2. Why do deep sea creatures glow?
About 90% of deep-sea organisms have bioluminescence capabilities. The main reasons include:
3. Why do typhoons mostly form in the ocean?
The development of typhoons requires three core conditions:
| Conditions | ocean action | Data indicators |
|---|---|---|
| warm sea water | provide energy | ≥26.5℃ (within 50 meters of water depth) |
| water vapor evaporates | low pressure center | Humidity＞60% |
3. Analysis of recent marine hot spots
Why does nuclear wastewater discharge attract global attention?
According to the International Atomic Energy Agency, Fukushima nuclear wastewater contains:
| Tritium | Difficult to separate radioactive isotopes | Half-life 12.3 years |
| Carbon-14 | May enter the food chain | Half-life 5730 years |
Why is the rate of coral bleaching increasing?
The latest research in 2023 shows:
Conclusion
The ocean is the cradle of life on earth. Understanding these "whys" not only satisfies curiosity, but is also the beginning of protecting the ocean. From reducing plastic use to supporting sustainable fisheries, everyone’s actions can make a difference in our blue land.
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