Undersea Garden (483 Piece Ocean Wooden Jigsaw Puzzle)

The Oceans cover nearly three-quarters of our planet. Still, very little of what lies under the water's surface is well understood or fully explored. Although ancient and modern societies named and divided the world's seas, there's technically only one global ocean.Water in the Arctic, Atlantic, Indian, Pacific, and Southern seas are all exchanged when currents move across the Earth. As a result, changes in one region can have an almost immediate impact on the others.Although trees get most of the credit, most oxygen in our atmosphere comes from marine plants. Tiny photosynthetic organisms that live in the sea, called Phytoplankton, are responsible for over half of the oxygen on Earth. It is more than all the world's tropical rainforests put together.Earth's most extended mountain range is actually underwater. The Mid-Ocean Ridge is a continuous string of underwater volcanoes that stretches around the globe for over forty thousand miles. That is nearly 10 times longer than the Andes.