Just as meteorologists measure the air temperature, the relative humidity (amount of water vapour in the air) and the wind (air movement), so do also oceanographers (people that study the sea) measure the sea temperature, the salinity (amount of salt in the sea water), the sea waves, the sea currents and many other properties of the sea including the sea bottom and marine living creatures (marine biota) and vegetation (marine fauna).
Learn about the marine equipment (instruments and sensors) that oceanographers use to observe the sea. These instruments are often very sophisticated tools that need specialists to handle them. But the information that they give us about the sea is useful for all of us to check about the state of health of the sea, to monitor changes in the sea such as due to climate effects, as well as to help the safe movement of ships, to detect effects of pollution, and aid search and rescue operations at the sea especially during storms.
Above all we observe the sea to learn more about it, and to safeguard it for future generations.
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