Which is the largest animal in the ocean?
Great White Shark
Blue Whale
Giant Squid
Orca
What is bioluminescence?
The ability to camouflage
The production of light by living organisms
Deep-sea echo location
Ocean floor heat emission
Which ocean is the deepest in the world?
Atlantic Ocean
Pacific Ocean
Indian Ocean
Arctic Ocean
What is the name of the deepest known ocean trench?
Tonga Trench
Mariana Trench
Kuril–Kamchatka Trench
Puerto Rico Trench
Which marine creature has three hearts?
Octopus
Starfish
Squid
Seahorse
What is a coral reef primarily made of?
Seaweed
Rock
Calcium carbonate from coral polyps
Shell fragments
Which sea creature is known as the "sea cow"?
Dugong
Manatee
Narwhal
Beluga
How do sharks detect their prey in murky waters?
Smell
Echolocation
Electroreception
Infrared vision
Which ocean zone receives no sunlight at all?
Epipelagic
Mesopelagic
Bathypelagic
Abyssopelagic
Which fish is the fastest swimmer in the ocean?
Tuna
Sailfish
Mako Shark
Marlin
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