The Seven Seas

So what are the Seven Seas exactly? According to a sentence from Wikipedia (that needs citation), the Seven Seas were:

• Mediterranean Sea (including "marginal seas")
• Adriatic Sea
• Black Sea
• Red Sea (including the Dead Sea and Galilee Sea)
• Arabian Sea
• Persian Gulf
• Caspian Sea

Today, the International Hydrographic Organization recognizes over 100 bodies of water referred to as "seas," including the Chesapeake Bay, which we can all agree is the best sea in town.

And now for the obligatory nondescript "sea" photo (which I took near the Bahamas):