Over fishing can affect the seas
The weather most probably arriving at the station is a cool, dry air. This kind of weather matches the characteristics shown in the weather instruments. The dewpoint temperature and air temperature are getting farther apart means that the air is getting dry while the rising air pressure represents a decreasing temperature.
Although a vast majority of seawater is found in oceans with salinity around 3.5%, seawater is not uniformly saline throughout the world.