Oct. 12, 2022.
Daily Trivia: Test your knowledge of life underwater with this Oceanic and Marine Life Quiz. What’s a “red tide”? Is the world’s largest coral reef system in danger? Which underwater animal families have immortal members? And what’s marine snow?
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The Ocean and Marine Life Quiz Questions
Here’s the complete list of our aquatic life trivia quiz questions.

How long might a coelacanth fish live?
Photo: Alberto Fernandez Fernandez, CC BY-SA 3.0, via Wikimedia Commons
Up to 100 years.Up to 100 months.Up to 100 weeks.Up to 100 days.What's a "red tide"?
Photo: Jeff Schmaltz, MODIS Rapid Response Team, NASA/GSFC, via Wikimedia Commons
A political wave towards left-wing governments in Latin America.The period between high tide and low tide when the sea level falls.The discoloration of the sea surface by harmful algal blooms.A cocktail comprising vodka and pomegranate juice.Where is the world's largest coral reef system?
Photo: Toby Hudson, CC BY-SA 3.0, via Wikimedia Commons
Mexico.Philippines.Australia.United States.What is Coral Bleaching?
Photo: Matt Kieffer from London, United Kingdom, CC BY-SA 2.0, via Wikimedia Commons
A disinfector for home use.The main reason for the world’s corals disappearing.An Eco-Friendly household cleaning product.A fabric pattern.What's a hydra?
Photo: Przemysław Malkowski, CC BY-SA 3.0, via Wikimedia Commons
The fish’s backbone.Flowering underwater plants native to Europe and Africa.A freshwater invertebrate animal about a half-inch long.A three-headed water snake.What's Jonah's icefish?
Photo: A research team from the Alfred Wagner Institute.
An Antarctic deep water fish.An Antarctic whale.An American fishery chain.A type of refrigerator.Which oceanic mammal doesn’t belong on this list?
Screenshot: Nat Geo Wild on YouTube
Orca (killer whale).Blue whale.Fin whale.Gray whale.What's marine snow?
Photo: NOAA National Ocean Service, Public domain, via Wikimedia Commons
It’s snow falling on the ocean.It’s material falling to the deep ocean.It’s a by-product of coral bleaching.Ocean foam on the water surface.Which natural phenomenon is nicknamed in New Zealand "aurora of the sea"?
Sander van der Wel, CC BY-SA 2.0, via Wikimedia Commons
The sun reflecting on the sea.Manmade light pollution.A local cruise ship.Blooms of plankton that glow after nightfall.What's the world's largest plant?
Photo: Rachel Austin / The University of Western Australia
Poseidon’s ribbon weed.The General Sherman tree.Mediterranean tapeweed.The Indian banyan.Which company is the world's biggest plastic polluter?
Photo: Raceforwater, CC BY-SA 4.0, via Wikimedia Commons
Unilever.Coca-Cola.PepsiCo.Nestlé.Which animal families have immortal members?
Photo: © Tony Wills / CC BY-SA 4.0 via iNaturalist.NZ
Corals and sea worms.Hydra and jellyfish.Marine sponges and crabs.Sea cucumbers and dolphins.