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Gulf of Mexico Trivia Questions

How much do you really know about Gulf of Mexico? Below are 8 true or false statements. Click each one to reveal the answer and explanation.

1.

The Gulf of Mexico is completely enclosed by land except for its connection to the Atlantic.

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Easy
✗ FALSE

It's semi-enclosed but also connects to the Caribbean Sea via the Yucatán Channel and to the Atlantic through the Florida Straits.

2.

The Gulf of Mexico experiences the strongest hurricanes in the Atlantic basin due to its warm waters.

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Medium
✗ FALSE

The strongest Atlantic hurricane by central pressure is Hurricane Wilma (2005), which formed in the Caribbean Sea, not the Gulf of Mexico. While the Gulf's warm waters fuel intense storms, it does not produce the record-holding strongest hurricanes.

3.

The Gulf of Mexico's annual dead zone can be as large as New Jersey.

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Medium
✓ TRUE

Nutrient runoff from the Mississippi River causes algal blooms and oxygen depletion. The dead zone reached 8,776 square miles in 2017, comparable to New Jersey's ~8,723 square miles.

4.

The Gulf of Mexico is the warmest ocean basin on Earth year-round.

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Medium
✗ FALSE

While warm, it's not the warmest. The Indian Ocean and parts of the Pacific have higher average temperatures due to different circulation patterns.

5.

The Gulf of Mexico is the largest gulf on Earth by surface area.

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Medium
✗ FALSE

The Gulf of Guinea covers about 2,350,000 km², making it larger than the Gulf of Mexico's 1,600,000 km².

6.

The Gulf of Mexico contains underwater brine pools that are toxic to most sea life.

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Hard
✓ TRUE

These hypersaline pools, often called 'underwater lakes,' have salt concentrations up to 5 times normal seawater, killing creatures that enter.

7.

The Gulf of Mexico was formed by a massive asteroid impact 65 million years ago.

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Hard
✗ FALSE

It formed by tectonic rifting and seafloor spreading during the Jurassic, not an impact. The Chicxulub crater is nearby but not the cause.

8.

The Gulf of Mexico has the world's largest fleet of artificial reefs made from retired subway cars.

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Hard
✗ FALSE

The Gulf of Mexico does not have a reef of retired subway cars. The NYC subway car reef program placed cars in the Atlantic Ocean, with the largest site being Redbird Reef off Delaware, not the Gulf.

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