The Greek fleet of 370 vessels attacked and broke the line, resulting in the loss of 500 Persians ships, while the Greeks under Themistocles only lost 40 ships.  
When the invading fleet appeared in the Bay of Phalerum before this battle, they were sent a false message by a spy which led them to blockade the Bay of Eleusis with a thin line of 1,000 ships.  The Greek fleet of 370 vessels attacked and broke the line, resulting in the loss of 500 Persians ships, while the Greeks under Themistocles only lost 40 ships.  FTP, name this major 480 BC naval battle in a strait southwest of Athen.
When the invading fleet appeared in the Bay of Phalerum before this battle, they were sent a false message by a spy which led them to blockade the Bay of Eleusis with a thin line of 1,000 ships.  
Battle of Salamis or Salamis Bay or Straits of Salamis