Sharks & Rays
1 / 15Explore the world of sharks and rays, ancient predators that have roamed the oceans for hundreds of millions of years.
15 quick questionsNo sign-upFree to playTap an answer below to begin ↓
How long have sharks existed on Earth?
About Sharks & Rays
Give your memory a workout with Sharks & Rays: 15 multiple-choice questions aimed at mixed difficulty, free to play right in your browser. Explore the world of sharks and rays, ancient predators that have roamed the oceans for hundreds of millions of years. Expect to spend about 7 minutes; every question comes with an explanation, so you learn something even when you miss.
A few sample questions
1. How long have sharks existed on Earth?
Answer: 450 million years
2. What is the largest species of shark alive today?
Answer: Whale shark
3. Shark skeletons are made entirely of what material instead of bone?
Answer: Cartilage
4. The hammerhead shark's wide head helps it with what ability?
Answer: Enhanced electroreception and wider field of vision
5. Which ray species can deliver a powerful electric shock of up to 220 volts?
Answer: Electric ray
Frequently asked questions
How long does Sharks & Rays take?
Most players finish Sharks & Rays in about 7 minutes. You can pause between questions, replay it as often as you like, and there is no penalty for taking your time — answers are explained after you submit them.
What's a good follow-up after Sharks & Rays?
If you enjoyed this general knowledge quiz, try the Daily Challenge — five rotating questions, refreshed every 24 hours, that count toward your streak. You can also use the Surprise Me button on the homepage to land on a different game type for variety.
Can I print Sharks & Rays?
Yes — use the Print button at the top of the page for a clean question sheet, or "Print with Answers" to make an answer key. Printed sheets work well for group play at home, in a classroom, or at a senior center.
Will I lose my progress if I close the page?
Your overall progress — XP, streaks, and badges — is saved in your browser automatically. A quiz that's underway restarts if you leave mid-game, but at about 7 minutes, Sharks & Rays fits comfortably in one sitting.
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