Surface zone Thermocline 180 – 240 m cold layer deep drift Tides follow the moon’s pull Currents carry cold water up Tidal bulge Swell & fetch moon
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Part of lesson Coastal and tidal systems

Tides and the lunar pull

18:24

How swell becomes waves

15:12

Currents and the deep drift

13:48

Salinity and density

11:07

Layers of the open ocean