Marine Animals & Fish

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

1.Which fish grows extremely fast in warm seas?
- A. flying fish
- B. mackerel
- C. salmon
- D. mahi-mahi
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mahi-mahi
Did you know? Mahi-mahi means "very strong" in Hawaiian.
2.Which marine animal has blue blood prized for medical testing?
- A. leatherback turtle
- B. cuttlefish
- C. horseshoe crab
- D. whale shark
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horseshoe crab
Did you know? Horseshoe crabs predate the dinosaurs.
3.Which fish is the fish whose eggs become caviar?
- A. grouper
- B. arapaima
- C. anchovy
- D. sturgeon
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sturgeon
Did you know? Sturgeons can live for many decades.
4.Which marine animal snaps its claw to make a shock wave in water?
- A. manatee
- B. shrimp (pistol)
- C. dugong
- D. octopus
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shrimp (pistol)
Did you know? The pistol shrimp's snap can reach near boiling temperatures briefly.
5.Which fish breathes air and survives dry seasons in mud?
- A. lungfish
- B. snapper
- C. halibut
- D. zebrafish
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lungfish
Did you know? The lungfish is among the closest living fish relatives of land vertebrates.
6.Which marine animal claps its front flippers and barks loudly?
- A. starfish (common)
- B. clownfish
- C. sea lion (California)
- D. orca
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sea lion (California)
Did you know? Sea lions can rotate their rear flippers to walk on land.
7.Which fish forms enormous schools of thousands of fish?
- A. betta (Siamese fighting fish)
- B. herring
- C. mackerel
- D. flying fish
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herring
Did you know? Herring schools change direction as one body.
8.Which marine animal sleeps in the water with only its nose exposed?
- A. shrimp (pistol)
- B. sea anemone
- C. nudibranch
- D. harbor seal
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harbor seal
Did you know? Harbor seals molt their fur every year.
9.Which fish generates shocks to stun prey?
- A. zebrafish
- B. flying fish
- C. tuna (bluefin)
- D. electric eel
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electric eel
Did you know? The electric eel is actually a knifefish, not a true eel.
10.Which marine animal is the largest living turtle?
- A. sponge
- B. harbor seal
- C. leatherback turtle
- D. whale shark
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leatherback turtle
Did you know? The leatherback can dive more than 1,000 meters deep.
11.Which fish is an ornamental carp bred for color patterns?
- A. carp
- B. cod
- C. koi
- D. goldfish
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koi
Did you know? Koi can recognize the people who feed them.
12.Which marine animal glides along the seabed camouflaged in sand?
- A. narwhal
- B. pufferfish
- C. bottlenose dolphin
- D. stingray
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stingray
Did you know? Stingrays breathe by drawing water through openings above their eyes.
13.Which fish breathes air at the water surface?
- A. trout
- B. sardine
- C. betta
- D. arapaima
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betta
Did you know? Male bettas build bubble nests for their eggs.
14.Which marine animal grazes algae with a five-toothed mouth?
- A. sea cucumber
- B. sea anemone
- C. sea urchin
- D. lionfish
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sea urchin
Did you know? The sea urchin's mouth mechanism is called Aristotle's lantern.
15.Which fish glides above the surface on wing-like fins?
- A. flying fish
- B. giant catfish
- C. herring
- D. betta (Siamese fighting fish)
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flying fish
Did you know? Flying fish can glide tens of meters per leap.
16.Which marine animal is a herbivore related to the manatee?
- A. sea cucumber
- B. sperm whale
- C. dugong
- D. horseshoe crab
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dugong
Did you know? Dugongs feed mainly on seagrass meadows.
17.Which fish gives birth to live young instead of eggs?
- A. mackerel
- B. lungfish
- C. guppy
- D. piranha
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guppy
Did you know? Guppies evolved rapidly in isolated streams.
18.Which marine animal lures prey with a glowing light organ?
- A. nautilus
- B. anglerfish
- C. sea anemone
- D. seahorse
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anglerfish
Did you know? The anglerfish lives in the deep ocean's darkness.
19.Which fish was thought extinct until found alive in 1938?
- A. lungfish
- B. tuna (bluefin)
- C. electric eel
- D. coelacanth
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coelacanth
Did you know? The coelacanth has lobed fins like ancient fossils.
20.Which marine animal borrows empty shells as portable homes?
- A. hermit crab
- B. moray eel
- C. sea otter
- D. sea lion (California)
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hermit crab
Did you know? Hermit crabs swap shells as they grow.
21.Which marine animal borrows color and stinging cells from its prey?
- A. nudibranch
- B. harbor seal
- C. coral
- D. blue whale
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nudibranch
Did you know? Nudibranchs are shell-less sea slugs.
22.Which fish lies flat camouflaged with both eyes on one side?
- A. snapper
- B. electric eel
- C. halibut
- D. pike
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halibut
Did you know? Halibut start life with an eye on each side and later move one.
23.Which marine animal controls its depth by pumping water in and out of its shell?
- A. nudibranch
- B. nautilus
- C. swordfish
- D. manatee
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nautilus
Did you know? The nautilus has survived largely unchanged for millions of years.
24.Which fish spends much of its life out of water?
- A. piranha
- B. goldfish
- C. mudskipper
- D. flying fish
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mudskipper
Did you know? Mudskippers breathe through their skin and mouth lining.
25.Which marine animal spreads venomous-looking striped fins as a warning?
- A. shrimp (pistol)
- B. leatherback turtle
- C. horseshoe crab
- D. lionfish
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lionfish
Did you know? Lionfish are native to the Indo-Pacific and invasive in the Atlantic.
26.Which fish ambushes prey with a sudden burst of speed?
- A. pike
- B. goldfish
- C. mudskipper
- D. giant catfish
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pike
Did you know? The pike's eyes sit near the top of its head.
27.Which marine animal hunts from crevices with a second set of jaws?
- A. moray eel
- B. octopus
- C. hermit crab
- D. stingray
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moray eel
Did you know? The moray eel's pharyngeal jaws help swallow prey.
28.Which fish breeds in the Sargasso Sea after a journey of thousands of kilometers?
- A. eel (European)
- B. coelacanth
- C. goldfish
- D. guppy
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eel (European)
Did you know? European eels swim across the Atlantic twice in a lifetime.
29.Which marine animal heats its eyes and brain for sharper hunting vision?
- A. harbor seal
- B. swordfish
- C. clownfish
- D. oyster
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swordfish
Did you know? The swordfish's bill can reach half its body length.
30.Which fish swallows prey with a sudden vacuum of water?
- A. tuna (bluefin)
- B. grouper
- C. betta (Siamese fighting fish)
- D. snapper
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grouper
Did you know? Groupers can change sex as they mature.
31.Which marine animal cleans the seabed by feeding on sand particles?
- A. narwhal
- B. nudibranch
- C. sea cucumber
- D. manatee
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sea cucumber
Did you know? Sea cucumbers expel their inner organs to distract threats.
32.Which fish can grow to over 2 meters in large rivers?
- A. piranha
- B. betta (Siamese fighting fish)
- C. lungfish
- D. giant catfish
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giant catfish
Did you know? Giant catfish hunt mainly by touch and taste.
33.Which marine animal cements itself to rocks, ships, and whales?
- A. barnacle
- B. jellyfish (moon)
- C. sea urchin
- D. harbor seal
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barnacle
Did you know? Barnacles are crustaceans, not mollusks.
34.Which fish flattens its body on the sandy seabed?
- A. lungfish
- B. pike
- C. snapper
- D. flounder
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flounder
Did you know? The flounder's camouflage matches sand patterns precisely.
35.Which fish is among the most popular reef food fish?
- A. cod
- B. flying fish
- C. halibut
- D. snapper
Show answer
snapper
Did you know? Snappers communicate with grinding jaw sounds.

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