The sea, the world ocean or simply the ocean is the connected body of salty water that covers over 70 percent of the Earth's surface. It moderates the Earth's climate and has important roles in the water cycle, carbon cycle, and nitrogen cycle. It has been travelled and explored since ancient times, while the scientific study of the sea—oceanography—dates broadly from the voyages of Captain James Cook to explore the Pacific Ocean between 1768 and 1779.
How inappropriate to call this planet Earth when it is quite clearly Ocean.Arthur C. Clarke
The 2nd largest aquarium tank in the world. The main tank called the "Kuroshio Sea" holds 7,500-cubic meters (1,981,290 gallons) of water and features the world's second largest acrylic glass panel. Whale sharks and manta rays are kept amongst many other fish species in the main tank.
Various lists of the Wonders of the World have been compiled from antiquity to the present day, to catalogue the world's most spectacular natural wonders and manmade structures.
The Seven Wonders of the Ancient World is the first known list of the most remarkable creations of classical antiquity; it was based on guidebooks popular among Hellenic sightseers and only includes works located around the Mediterranean rim. The number seven was chosen because the Greeks believed it was represented perfection and plenty, and because it was the number of the five planets known anciently plus the sun and moon. Many similar lists have been made.