Glass Reefs in the Cold Deep Ocean
Chapter 1

Journey to the absolute bottom of the world

Chapter 2

Colossal records of the open sea

Chapter 3

Masterpieces of geological and biological design

Chapter 4

Bioluminescence and phantom lights of the sea

Ch 3 · Masterpieces of geological and biological design
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schopenhauer Glass Sponge Reefs

Reefs made of glass in the cold and the deep! (Cold and the deep!) Thought they were gone, but a secret they keep! (Yeah, they keep!)

Sep 25

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schopenhauer Belize's Great Blue Hole is a massive marine sinkhole.

Sep 25

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The boiling chimneys of hydrothermal vents

schopenhauer Underwater geysers spew mineral-rich water at temperatures exceeding 400 degrees Celsius.

Sep 25

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Fun Fact

Ancient structures: The stalactites inside Belize's Great Blue Hole show that the cave was formed and flooded in multiple stages between 15,000 and 150,000 years ago.

Sep 25

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The optical illusion of Mauritius's underwater waterfall

schopenhauer A stunning visual phenomenon off the coast of East Africa mimics a cascading abyss.

Sep 25

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Glossary
atoll (noun)
A ring-shaped coral reef, island, or chain of islands that surrounds a lagoon. In 1842, Charles Darwin published a landmark theory explaining how these structures form as volcanic islands sink.

Sep 25

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Quiz

Where is the famous optical illusion of the underwater waterfall located?

Sep 25

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Gossip

Which underwater phenomenon is most mind-blowing?

Sep 25

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Masterpieces of geological and biological design
BETA

schopenhauer Match extreme ocean records to discover the planet's strangest geological and biological masterpieces.

Sep 25

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schopenhauer The underwater waterfall optical illusion off the coast of Mauritius.

Sep 25

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Quiz

What is the approximate depth of the Great Blue Hole in Belize?

Sep 25

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schopenhauer The Great Barrier Reef of Australia is a massive living structure.

Sep 25

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Quiz

What are the tiny organisms that build the massive calcium carbonate structures of the Great Barrier Reef?

Sep 25

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schopenhauer Boiling hydrothermal vents form towering chimneys along volcanic ridges.

Sep 25

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Quiz

In what year were the first deep-sea hydrothermal vents discovered by scientists?

Sep 25

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Quiz

Approximately how long is the Great Barrier Reef in Australia?

Sep 25

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Quiz

What actually causes the 'underwater waterfall' illusion near Mauritius?

Sep 25

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Quiz

How do ecosystems around deep-sea hydrothermal vents produce energy without sunlight?

Sep 25

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Quiz

What geological feature inside the Great Blue Hole of Belize proves it was once a dry cave?

Sep 25