Chapter 1
Life in the shadows
Chapter 2
Toxic oases and hot springs
Chapter 3
Under crushing pressure
Chapter 4
The technology of discovery
Ch 1 · Life in the shadows
artiteacher The Poseidon Squid
Ghost-pale skin, / Trident-hook claws, / Zero glowing lights!
artiteacher Animals use a chemical reaction involving luciferin to create bioluminescence, helping them find mates, lure prey, and scare predators in darkness.
Quiz
What is the chemical molecule responsible for producing biological light in most deep-sea creatures?
Quiz
At what depth does the ocean's midnight zone begin, where sunlight no longer penetrates?
artiteacher A high schooler named this ocean worm using the Slavic word for spark.
Quiz
What does the name Iskra mean, which was given to the newly discovered deep-sea glitter worm?
Fun Fact
Glowing sharks: Some deep-sea sharks have glowing undersides to camouflage themselves against faint sunlight from above.
Quiz
When did scientists officially recognize Poseidon's squid as a completely new family of squid?