Question 1

True or false: The Great Blue Hole was made famous by explorer Jacques Cousteau, who declared it one of the top dive sites.

Accepted Answer

True. Cousteau brought the hole to global attention in 1971 on his ship Calypso, mapping it and calling it a top dive destination.

Question 2

True or false: From space, the Great Blue Hole appears as a dark circle surrounded by a bright turquoise ring.

Accepted Answer

True. Its deep blue color contrasts sharply with the shallow, light-colored lagoon, making it clearly visible from orbit.

Question 3

True or false: Great white sharks are commonly spotted hunting near the Great Blue Hole.

Accepted Answer

False. The area is more known for reef sharks, nurse sharks, and bull sharks—great whites rarely visit these warm Caribbean waters.

Question 4

True or false: You need advanced technical diving certification to legally swim in the Great Blue Hole.

Accepted Answer

False. Anyone can snorkel or take a recreational dive there, but going below 130 feet requires special training due to depth risks.

Question 5

True or false: The Great Blue Hole was formed during the last Ice Age when sea levels were much lower.

Accepted Answer

True. It was a dry limestone cave system that collapsed and flooded as glaciers melted and sea levels rose around 10,000 years ago.

Question 6

True or false: Divers can see giant stalactites hanging from the ceiling of the Great Blue Hole.

Accepted Answer

True. Inside the hole, massive stalactites from its cave days still hang, some over 40 feet long, visible in the deeper, darker waters.

Question 7

True or false: The Great Blue Hole is the deepest known underwater sinkhole in the world.

Accepted Answer

False. It's about 400 feet deep, but deeper ones exist, like the Dragon Hole in the South China Sea at nearly 1,000 feet.

Question 8

True or false: The Great Blue Hole is home to a rare species of bioluminescent jellyfish found nowhere else on Earth.

Accepted Answer

False. No unique jellyfish species has been confirmed there; bioluminescent creatures do exist, but none are exclusive to the hole.

The Great Blue Hole Trivia Questions