Find Out About the Sea: with 20 Projects and More Than 260 Pictures

More than 70 per cent of the Earth's surface is covered by water, forming a huge global sea. If you tasted the sea water, you would find that it was very salty, unlike the fresh water in rivers and lakes. This title lets you explore the murky and mysterious ocean depths, the sweeping tides and currents, icy Polar waters and bright coral reefs.