Home Quiz Plunge into the depths and test your ocean IQ!
Preview (10 questions)
1 Question
30 seconds
Q.

Which is the largest animal in the ocean?

Great White Shark

Blue Whale

Giant Squid

Orca
2 Question
30 seconds
Q.

What is bioluminescence?

The ability to camouflage

The production of light by living organisms

Deep-sea echo location

Ocean floor heat emission
3 Question
30 seconds
Q.

Which ocean is the deepest in the world?

Atlantic Ocean

Pacific Ocean

Indian Ocean

Arctic Ocean
4 Question
30 seconds
Q.

What is the name of the deepest known ocean trench?

Tonga Trench

Mariana Trench

Kuril–Kamchatka Trench

Puerto Rico Trench
5 Question
30 seconds
Q.

Which marine creature has three hearts?

Octopus

Starfish

Squid

Seahorse
6 Question
30 seconds
Q.

What is a coral reef primarily made of?

Seaweed

Rock

Calcium carbonate from coral polyps

Shell fragments
7 Question
30 seconds
Q.

Which sea creature is known as the "sea cow"?

Dugong

Manatee

Narwhal

Beluga
8 Question
30 seconds
Q.

How do sharks detect their prey in murky waters?

Smell

Echolocation

Electroreception

Infrared vision
9 Question
30 seconds
Q.

Which ocean zone receives no sunlight at all?

Epipelagic

Mesopelagic

Bathypelagic

Abyssopelagic
10 Question
30 seconds
Q.

Which fish is the fastest swimmer in the ocean?

Tuna

Sailfish

Mako Shark

Marlin