When salt and water and air combine, it accelerates the oxidation, therefore making the car rust faster :)
Because there is salt spray (wind spraying the sea water) near the sea which causes steel to rust.
Living in colder climates that get more snow can cause your care to rust faster. The salt that highway departments typically use on winter roads can accelerate the rusting of automobiles.
Because there is more salt in the air from the sea winds; And we know that the mixture of salt and water makes metal rust.
Sea water can rust nails or other metals.
Rust in it's truest definition is Iron(III) Oxide, meaning the only metal that can "rust" is Iron. If you are asking, "What metals oxidize more quickly near the sea?" The answer would still be Iron or steel, which has Iron in it. Oxidation occurs when metals have chemical reactions with Oxygen in the air and water. Rust occurs when the Iron atoms lose a few electrons to the Oxygen atoms and deteriorates the structure of the molecules, creating weak points. Salt water and salty air allows ions to flow more easily from objects creating faster decay. Ships battle this natural process be attaching galvanic anodes to the hull of the ships, this anode can be made out of Magnesium, Aluminum, or Zinc and basically creates a magnet for the ions, from the Oxygen, to "attack" it instead of deteriorating the Iron. These anodes need replaced about every 6 months.
Normally it doesn't - or rather the amount of salt is so low that it is considered salt free ... that is : fresh water. However. Near the edge of the ocean there is often a "sea-breeze" , a wind coming in from the sea, and it carries with it a small but NOT negligible amount of sea water. IF it is raining at the time, then the rain water can be quite salty. This effect is most noticeable near any beach, say within a quarter mile. Note the amount of rust on any car parked within this limit.
take a car and go near a sea and type seaways
Because of the Salt and water mixed together in the air. Its just like putting water and salt on Iron and letting it sit there for a while.
Because some metals are reactive and corrode in sea water
The coast of countries and/or islands are near the sea. It depends on which sea you are talking about.
sea water (salt water)
Salt water is corrosive. And there is more moisture in the air.