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TroyandAbedAfterDark t1_is1xk96 wrote

Reply to comment by [deleted] in Does the salinity of ocean water increase as depth increases? by rhinotomus

Follow up question: does water temperature increase the deeper you go due to pressure increasing? Or does it just get colder due to darkness and lack of thermal energy from the sun? I’m assuming water does heat near volcanic openings in the crust and such.

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jar4ever t1_is30yz3 wrote

The surface layer is warmest, followed by a rapid decrease in temperature in the area called the thermocline. After that, the temperature is mostly constant as you get deeper, but will tend to get slightly colder as you go deeper. The effects of lack of solar energy dominate any increase from pressure or thermal vents.

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