Marine Animals & Fish

40 questions · Answers revealed below each question · Print this set

1.Which fish swims from the sea back to its birth river to spawn?
- A. salmon
- B. eel (European)
- C. arapaima
- D. koi
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salmon
Did you know? Salmon navigate using Earth's magnetic field.
2.Which marine animal lives among sea anemone tentacles in a sheltering bond?
- A. anglerfish
- B. starfish (common)
- C. clownfish
- D. sea anemone
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clownfish
Did you know? All clownfish hatch male; some later become female.
3.Which fish is among the most farmed fish in the world?
- A. salmon
- B. coelacanth
- C. snapper
- D. carp
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carp
Did you know? Domesticated carp became koi in Japan.
4.Which marine animal builds reefs from calcium carbonate?
- A. dugong
- B. coral
- C. giant squid
- D. sea urchin
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coral
Did you know? Coral reefs shelter about a quarter of marine species.
5.Which fish is a small striped fish used widely in research labs?
- A. flying fish
- B. zebrafish
- C. snapper
- D. guppy
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zebrafish
Did you know? Zebrafish can regenerate parts of their heart.
6.Which marine animal is among the ocean's largest rays?
- A. hermit crab
- B. swordfish
- C. bottlenose dolphin
- D. manta ray
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manta ray
Did you know? Manta rays filter plankton as they glide.
7.Which fish filters plankton in coastal waters?
- A. anchovy
- B. arapaima
- C. trout
- D. goldfish
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anchovy
Did you know? Anchovies are among the most fished species worldwide.
8.Which marine animal creates pearls around irritating particles?
- A. sperm whale
- B. octopus
- C. great white shark
- D. oyster
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oyster
Did you know? An oyster filters dozens of liters of water a day.
9.Which fish swims in schools that can number millions?
- A. tuna (bluefin)
- B. zebrafish
- C. lungfish
- D. sardine
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sardine
Did you know? Sardine runs attract dolphins and seabirds in feeding frenzies.
10.Which marine animal tastes with receptors on its legs?
- A. barnacle
- B. lobster (American)
- C. sperm whale
- D. whale shark
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lobster (American)
Did you know? Lobsters keep growing throughout their lives.
11.Which fish has a memory span far longer than three seconds?
- A. flying fish
- B. flounder
- C. lungfish
- D. goldfish
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goldfish
Did you know? Goldfish were domesticated in ancient China over a thousand years ago.
12.Which marine animal migrates back to the beach where it hatched?
- A. giant squid
- B. jellyfish (moon)
- C. green sea turtle
- D. bottlenose dolphin
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green sea turtle
Did you know? Green sea turtles can rest underwater for hours.
13.Which marine animal is the largest animal known to have ever lived?
- A. starfish (common)
- B. walrus
- C. manta ray
- D. blue whale
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blue whale
Did you know? A blue whale's heart can weigh as much as a small car.
14.Which marine animal is the fish whose males carry the young?
- A. seahorse
- B. swordfish
- C. jellyfish (moon)
- D. nudibranch
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seahorse
Did you know? Seahorses pair off in courtship dances at dawn.
15.Which marine animal can detect electric fields with special organs?
- A. manatee
- B. great white shark
- C. narwhal
- D. common dolphin
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great white shark
Did you know? Great white sharks keep their body warmer than surrounding water.
16.Which marine animal walks sideways along rocky shores?
- A. giant squid
- B. shore crab
- C. lionfish
- D. whale shark
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shore crab
Did you know? Shore crabs breathe with gills kept moist in hollows.
17.Which marine animal stings passing fish with its tentacles?
- A. sea lion (California)
- B. sea anemone
- C. narwhal
- D. oyster
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sea anemone
Did you know? Clownfish shelter among sea anemone tentacles.
18.Which marine animal has a single long tusk that is actually a tooth?
- A. narwhal
- B. sponge
- C. lionfish
- D. great white shark
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narwhal
Did you know? The narwhal lives in Arctic waters year-round.
19.Which marine animal uses echolocation clicks to find prey?
- A. common dolphin
- B. manta ray
- C. lionfish
- D. bottlenose dolphin
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bottlenose dolphin
Did you know? Bottlenose dolphins recognize themselves in mirrors.
20.Which marine animal uses rocks to crack open shellfish?
- A. sea cucumber
- B. harbor seal
- C. sea otter
- D. seahorse
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sea otter
Did you know? Sea otters hold hands while resting to avoid drifting apart.
21.Which marine animal has three hearts and blue blood?
- A. pufferfish
- B. dugong
- C. shrimp (pistol)
- D. octopus
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octopus
Did you know? An octopus can squeeze through any gap larger than its beak.
22.Which marine animal regrows lost arms over time?
- A. starfish (common)
- B. blue whale
- C. sea anemone
- D. oyster
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starfish (common)
Did you know? Starfish push their stomachs out to digest prey.
23.Which marine animal uses long tusks to haul itself onto ice?
- A. dugong
- B. sea cucumber
- C. walrus
- D. bottlenose dolphin
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walrus
Did you know? A walrus's blubber can be 15 centimeters thick.
24.Which marine animal has eyes on the ends of its wide head?
- A. blue whale
- B. orca
- C. manta ray
- D. hammerhead shark
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hammerhead shark
Did you know? The hammerhead's head improves sensory perception.
25.Which marine animal has no brain, heart, or bones?
- A. clownfish
- B. swordfish
- C. jellyfish (moon)
- D. sea urchin
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jellyfish (moon)
Did you know? Moon jellyfish drift with ocean currents.
26.Which marine animal is a slow-moving herbivore of warm coastal waters?
- A. seahorse
- B. sperm whale
- C. shore crab
- D. manatee
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manatee
Did you know? Manatees are sometimes called "sea cows".
27.Which marine animal is the largest living fish?
- A. sponge
- B. dugong
- C. whale shark
- D. jellyfish (moon)
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whale shark
Did you know? Whale sharks feed almost entirely on plankton.
28.Which marine animal is actually the largest member of the dolphin family?
- A. seahorse
- B. hermit crab
- C. orca
- D. sea otter
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orca
Did you know? Orca pods have distinct dialects of calls.
29.Which fish cruises in fast schools near the surface?
- A. herring
- B. mahi-mahi
- C. trout
- D. mackerel
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mackerel
Did you know? Mackerel cannot stop swimming without sinking.
30.Which marine animal leaps in groups alongside fast ships?
- A. moray eel
- B. shrimp (pistol)
- C. common dolphin
- D. bottlenose dolphin
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common dolphin
Did you know? Common dolphins have an hourglass pattern on their sides.
31.Which fish keeps its body warmer than the surrounding sea?
- A. tuna (bluefin)
- B. mackerel
- C. zebrafish
- D. eel (European)
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tuna (bluefin)
Did you know? Bluefin tuna can cross entire oceans in a year.
32.Which marine animal inflates its body as a defense?
- A. pufferfish
- B. hermit crab
- C. hammerhead shark
- D. clownfish
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pufferfish
Did you know? The pufferfish inflates by swallowing water rapidly.
33.Which fish thrives in cold, clear, oxygen-rich streams?
- A. trout
- B. mahi-mahi
- C. herring
- D. electric eel
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trout
Did you know? Trout are sensitive indicators of water quality.
34.Which marine animal makes the loudest sound of any animal?
- A. orca
- B. sperm whale
- C. whale shark
- D. starfish (common)
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sperm whale
Did you know? The sperm whale hunts giant squid in the deep.
35.Which fish was the fish that fed centuries of Atlantic trade?
- A. cod
- B. betta (Siamese fighting fish)
- C. carp
- D. eel (European)
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cod
Did you know? Cod have a barbel under the chin used for tasting.
36.Which marine animal is an animal that filters water through pores?
- A. hermit crab
- B. sponge
- C. sea anemone
- D. sperm whale
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sponge
Did you know? Sponges have no nervous system.
37.Which fish breathes air and guards its young in floodplain waters?
- A. arapaima
- B. cod
- C. salmon
- D. piranha
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arapaima
Did you know? The arapaima is one of the Amazon's largest freshwater fish.
38.Which marine animal changes skin patterns in milliseconds?
- A. sea otter
- B. cuttlefish
- C. harbor seal
- D. jellyfish (moon)
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cuttlefish
Did you know? Cuttlefish are colorblind yet masters of camouflage.
39.Which fish has one of the strongest bites relative to body size?
- A. piranha
- B. carp
- C. coelacanth
- D. trout
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piranha
Did you know? Piranhas mostly eat seeds and insects.
40.Which marine animal has the largest eyes in the animal kingdom?
- A. bottlenose dolphin
- B. giant squid
- C. starfish (common)
- D. barnacle
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giant squid
Did you know? The giant squid was long known only from sailor legends.

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