Do you know what lurks beneath the waves and the mysteries held in the depths of the ocean? Take this quiz to rediscover the marvels of aquatic and marine life! The underwater world is home to some of Earth’s most fascinating and unique creatures. Discover how these diverse marine species live and thrive in their unique ecosystems and the quirky facts that make them so intriguing.
From the tiniest plankton to the majestic whales, the marvels of the ocean are endless. Whether it’s the colorful coral reefs or the mysterious ocean depths, these trivia questions will challenge your understanding of marine biodiversity and environmental significance.
Are you looking for more trivia? Dive into our birds, land mammals, and insects trivia to expand your knowledge of Earth’s incredible biodiversity.
Check out similar quizzes:
- 20 Birds and Their Unique Traits
- 29 Land Mammal Mysteries and Facts
- 16 Insects, Arachnids, and Small Creatures Wonders
The false anemonefish is better known as which species?
Yellowtail snapper
Yellowtail snapper
Sand shark
Sand shark
Lionfish
Lionfish
Clownfish
Clownfish
Do animals underwater breathe oxygen?
Impossible To Say
Impossible To Say
Yes
Yes
No, Only Hydrogen
No, Only Hydrogen
No, Only Nitrogen
No, Only Nitrogen
Which name is also used for the Araguaia river dolphin?
Boto
Boto
Bolo
Bolo
Bata
Bata
Bana
Bana
Brown Fur Seals have been known to dive to depths of how many meters when foraging?
100m
100m
350m
350m
200m
200m
500m
500m
What color is a great white shark?
Brown
Brown
Orange
Orange
Grey
Grey
Pink
Pink
In the wild, a hammerhead shark can grow to be how many feet long?
20 feet
20 feet
5 feet
5 feet
15 feet
15 feet
10 feet
10 feet
Which other marine mammal preys on the bottlenose dolphin?
Whale shark
Whale shark
Great White Shark
Great White Shark
Killer Whales
Killer Whales
Walrus
Walrus
How many teeth does an Araguaia river dolphin have in each jaw?
4
4
14
14
34
34
24
24
A fingernail-like material called baleen is attached to which part of a blue whale?
Tail
Tail
Jaw
Jaw
Blowhole
Blowhole
Flipper
Flipper
Commercial Antarctic krill fishing began in which decade?
1960s
1960s
1940s
1940s
1950s
1950s
1970s
1970s
The largest Dumbo Octopus found was how long?
3.5m
3.5m
0.9m
0.9m
1.8m
1.8m
2.9m
2.9m
Which is the largest animal which feeds on the Antarctic krill?
Penguin
Penguin
Blue whale
Blue whale
Seal
Seal
Polar Bear
Polar Bear
Which crustacean has a snapping claw that fires bubbles and can register a volume of 210 decibels?
Torpedo Crab
Torpedo Crab
Pistol Shrimp
Pistol Shrimp
Cannon Scampi
Cannon Scampi
Bomb Lobster
Bomb Lobster
Araguaia river dolphins are usually grey, but can be which other color?
Green
Green
Brown
Brown
Black
Black
Pink
Pink
Amphipods are which type of animals?
Crustaceans
Crustaceans
Mammals
Mammals
Marsupials
Marsupials
Reptiles
Reptiles
It is thought that fish form shoals to assist which type of feeding behaviour?
Trawling
Trawling
Scavenging
Scavenging
Foraging
Foraging
Hunting
Hunting
What is the name for a group of hammerhead sharks?
Class
Class
School
School
Herd
Herd
Flock
Flock
What other name, associated with food, is used for the Chokka squid?
Candy
Candy
Chicken
Chicken
Cucumber
Cucumber
Calamari
Calamari
What color is the grey whale?
Grey
Grey
Black
Black
White
White
Blue
Blue
Which sort of water does the goatfish live in?
Swimming pools
Swimming pools
Rivers
Rivers
Saltwater
Saltwater
Lakes
Lakes
What word is used to describe fish which swim in shoals all of the time?
Facultative
Facultative
Arthropod
Arthropod
Obligate
Obligate
Cetacean
Cetacean
During migration, humpback whales are known to travel how many miles?
6000
6000
16000
16000
12000
12000
2000
2000
What is the upper limit of tonnes of Chokka squid are caught every year?
6000
6000
13000
13000
1000
1000
4000
4000
A blue whale can weigh up to how many tons?
50 tons
50 tons
200 tons
200 tons
100 tons
100 tons
400 tons
400 tons
The hairy angler fish was first caught in waters off which island group?
Canary Islands
Canary Islands
Galapagos Islands
Galapagos Islands
Hawaii
Hawaii
Cape Verde
Cape Verde
Adult bottlenose dolphins consume around how many kilos of food per day?
25kg
25kg
20kg
20kg
6kg
6kg
12kg
12kg
North Atlantic stocks of herring collapsed in which decade?
1920s
1920s
1980s
1980s
1940s
1940s
1960s
1960s
Orca is another name for which whale?
Blue
Blue
Pilot
Pilot
Beluga
Beluga
Killer
Killer
Which water animal has the strongest bite?
Great White Shark
Great White Shark
Killer Whale
Killer Whale
Crocodile
Crocodile
Hippo
Hippo
Which large fish often feeds on smaller coral reef fish?
Tuna
Tuna
Marlin
Marlin
Swordfish
Swordfish
Barracuda
Barracuda
What do Chokka squid feed on?
Eels
Eels
Crustaceans
Crustaceans
Seaweed
Seaweed
Jellyfish
Jellyfish
You can do better
Not bad
Great!
Find all our questions on this topic in this quiz: 101 Animal Trivia Questions That Will Make You Go Wild