More Sea-Shape Geo-Riddles

The shapes of several water bodies are presented below, with accompanying riddles.  Answers are provided below each shape in the form of a larger, labeled map.  The riddles are explained at the end of the post.

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#1. The riddle refers to the waterlogged Birds Foot Delta of the Mississippi River, which is clearly visible and has the appearance of a finger.

#2. The Caribbean Sea together with the Gulf of Mexico is called the “American Mediterranean Sea.”

#3. The Persian (or Arabian) Gulf region has the world’s largest oil reserves, and the gulf itself has a lot of oil pollution.

#4. The Red Sea is linked to the actively rifting Red Sea Rift:

#5 China’s controversial Nine-Dash Line encloses most of the South China Sea.  https://en.wikipedia.org/wiki/Nine-dash_line

#6 The East China Sea is north-northeast of the South China Sea, which is #5 in this series.

#7. In the board game “Monopoly,” Baltic Avenue has the second lowest rents.

#8. Japan and Korea – North and South – tussle over the name of the sea that lies between them.