• Over 70% of the Earth’s surface is covered by sea and it can take 5,00 years for one drop of seawater to travel through all the world’s oceans.
• The deepest ocean in the world is the Pacific Ocean, while the shallowest is the Atlantic Ocean.
• Canada has the longest coastline of any country. Including the many islands, the coast is more than 244,000 km long – that is 6 times longer than the coast of Australia
• The world’s longest mountain chain, the Mid-Atlantic Ridge is in the ocean. It is 4 times longer than the Himalayas, Andes and Rockies combined.
• Salt is not the only substance found in seawater. There are also tiny traces of gold, silver, uranium and other minerals.
• Sound travels through water five times faster than through air. Dolphins navigate through the oceans by bouncing sounds off their surroundings and listening to their echo.
• The Antarctic Ice Sheet is twice the size of the United States of America.
• Water is unique in that it is the only natural substance that is found in all three states – solid (ice), liquid (water) and gas (steam).
• In some places around the world, pollution of the oceans has made local seafood unfit to eat.

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