Several natural processes make ocean water salty. For example, when it rains, the water droplets react with carbon dioxide in the atmosphere and form carbonic acid, making rainwater slightly acidic. This acidic rainwater reacts with minerals present in the rocks and forms new minerals and salts. This acidic rainwater reacts with minerals present in the rocks and form new minerals and salts. These minerals and salts are then carried by flowing water to the oceans, thus making the ocean water salty.
In addition to this, along the mid-ocean ridges, magma rises close to the oceanic crust. Here, when the salty ocean water seeps into the earth's crust, it gets hot due to magma. This hot water dissolves more minerals present in the crust and carries them to the oceans through fissures called hydrothermal vents, thus making the ocean water salty.
Also, don't forget to subscribe to our YouTube channel.