Oceans absorb the heat from the Sun at the equator and distribute it around the globe, towards the poles, shaping our weather and climate. The pull of gravity from the Sun and Moon creates tides that in turn create ocean currents. Currents provide the means for ocean dwellers, from giant jellyfish to plankton, to move around.

Scientists know less about what's actually in the ocean than they know about the dark side of the Moon! But now, with scuba diving gear, submersibles, and satellites, we can start to investigate parts of the ocean that used to be beyond our reach.