Install QuizVortex App
Play offline · Home screen icon · Faster loading
Dive into 18 fun questions about creatures of the sea! From sharks to seahorses, test your ocean animal knowledge — perfect for kids and adults alike.
1. What is a group of dolphins called?
💡 A group of dolphins is called a pod. They are highly social and communicate using clicks and whistles.
2. How many hearts does an octopus have?
💡 Octopuses have 3 hearts — two pump blood to the gills, one pumps blood to the rest of the body.
3. What do whales use to communicate?
💡 Whales communicate through clicks, whistles, and complex songs that can travel thousands of kilometers underwater.
4. What is the deadliest jellyfish in the world?
💡 The box jellyfish is considered the most venomous marine animal — its sting can cause death within minutes.
5. What is the fastest fish in the ocean?
💡 The sailfish is the fastest fish, reaching speeds up to 110 km/h — named for its spectacular dorsal fin.
6. How many arms does an octopus have?
💡 Octopuses have 8 arms lined with suckers — they are highly intelligent and can use tools.
7. Which ocean animal is known for carrying its home?
💡 Hermit crabs live in discarded shells of other mollusks, upgrading to bigger shells as they grow.
8. Which sea creature has no brain or heart?
💡 Jellyfish have no brain, heart, or bones — they are 95% water and use a simple nerve net instead.
9. Which sea creature can regenerate lost arms?
💡 Starfish can regenerate lost arms — some species can even regrow an entire body from a single arm.
10. What is the largest fish in the ocean?
💡 The whale shark is the largest fish in the world, reaching up to 12 meters. It is a gentle filter feeder.