How Earth's five oceans connect to form the largest ecosystem on the planet, and how its network of currents supports the health of the seas and...
Gordon Buchanan joins a family in a tropical paradise to learn how to swim with sharks. Freedivers teach Gord...
What lies at the bottom of the oceans? What would happen if the planet lost its oceans? Richard Hammon...
Iain travels to surfers' paradise Hawaii to learn more about oceans, explaining the difference between waves, tides and currents.
Empty the oceans and you’d see hidden wonders, but you'd also cause the end of the world.
Dr Helen Czerski explains how a waterfall under the ocean produces a warmer water on top and colder...
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