Ocean Depths Quiz
Test your knowledge about the mysteries of the ocean!
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5 questions · Quick play · Instant results
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Quiz Questions & Answers
Review every prompt, the correct responses, and helpful context to prep for your own run-through.
Question 1: What percentage of the ocean is completely unmapped by humans?
Seventy
Eighty
Ninety
Fifty
Question 2: Which trench is the deepest known point in the ocean?
Java
Puerto
Tonga
Mariana
Question 3: What color of light disappears first in underwater depths?
Red
Yellow
Green
Blue
Question 4: What biological phenomenon allows deep sea creatures to glow?
Phosphorescence
Fluorescence
Bioluminescence
Chemiluminescence
Question 5: What type of extreme deep sea vent releases dark sulfur?
Seamount
Fissure
Smoker
Geyser