HardNature
"I am an animal that builds cities. I look like a plant and move like a rock. My city is home to a quarter of all ocean species. What am I?"
Answer
Coral
Explanation
Coral is an animal — a tiny polyp that builds a hard calcium carbonate skeleton. Coral reefs, built by billions of polyps over centuries, cover less than 1% of the ocean floor but support about 25% of all marine species.
This is a hard riddle in the Nature category — Riddles about the natural world, animals, weather and geography.
Tags:animalsnatureocean
✦
More Nature Riddles
Keep going — other riddles in this category:
- I have a bed but never sleep, a mouth but never eat. I run all day but never tire. What am I?
- I strike without warning, illuminate everything for a moment, then disappear without a trace. I am feared yet beautiful. What am I?
- You feel me but cannot see me. I can be gentle or violent. I have no home yet I travel everywhere. I carry seeds, scatter leaves, and shape mountains over time. What am I?
- I am useless when closed and useful only when open. I protect you from above but I do not cover your feet. What am I?
- I fall but I am never injured. I run but I have no legs. I come from above and end up below. I am needed by all living things. What am I?
- I am older than any king yet I bow to no one. I cannot move yet I have shaped the world. The higher you climb me the colder it gets. What am I?