How does salinity change the deeper you go in the ocean?

Salinity generally increases with depth in the ocean due to factors such as the pressure and temperature changes that affect water density. However, this trend can vary in different regions due to mixing processes, freshwater input from rivers, and melting ice. In deeper waters, salinity levels can stabilize, forming distinct layers that reflect the ocean's thermohaline circulation. Overall, while deeper layers often have higher salinity, local conditions can lead to variations.