Short answers, pulled from the story.
The first life on Earth emerged from the depths of a vast, salty ocean before life appeared on land or in the air. This primordial soup provided the only viable cradle for biological evolution by protecting early organisms from harsh ultraviolet radiation.
The sea covers approximately 71 percent of the Earth's surface and holds 97.2 percent of the planet's known water. Its chemical composition has remained remarkably stable for billions of years despite variations in salt concentration across different regions.
The Challenger expedition of 1872 to 1876 shattered the myth that the deep sea was devoid of life. This expedition discovered thousands of new species and proved that life thrives in the deepest parts of the ocean, including around hydrothermal vents in the Mariana Trench.
The Austronesian peoples began mastering the art of navigation around 3000 BC to spread across the Pacific. They reached as far as Hawaii, Easter Island, and New Zealand on outrigger canoes, connecting distant cultures and enabling the rise of civilizations.
The United Nations Convention on the Law of the Sea came into force in 1994 to define various zones of maritime jurisdiction. This agreement established rights for coastal states to exploit resources within 200 nautical miles of their baseline while keeping the high seas open to all nations.
Fish provided 16.6 percent of animal protein and 6.5 percent of all protein consumed in 2009. Aquaculture has since grown to produce 79 million tonnes of food and non-food products annually, offering a sustainable alternative to wild capture fisheries.