Ocean Animals: The Weirdest Neighbours We Have

SheelonBiologyScienceEnglishGrades K-5Published Aug 5, 2026

Three hearts, no brain, and a mammal that never leaves the water. Ten questions on the animals living in the largest habitat on Earth.

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Question 1 of 3
What is the largest animal that has ever lived?Tap an answer
Multiple Choice · 20s
Question 2 · unlocks after question 1
Question 3 · unlocks after question 2

What is a shark's skeleton made of?Multiple Choice · 20s
What is the deepest known place in the ocean called? (two words)Type Answer · 30s
Which sea creature has no brain and no heart?Multiple Choice · 20s
In seahorses, the male carries the eggs until they hatch.True / False · 20s
What is bioluminescence?Multiple Choice · 20s
What is coral?Multiple Choice · 20s
How much of the Earth's surface is covered by ocean, roughly, as a percentage?Type Answer · 30s

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