Why may hammerheads have wide heads?

To improve senses and maneuvering

Sharks Quiz: 10 Questions That Test What You Know

Sharks were patrolling the oceans before the first trees grew on land, and this sharks quiz explores how they have survived so long. Meet Greenland sharks that live for centuries, great whites breaching off South Africa and whale sharks, the gentle giants that feed on plankton.

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🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds

Question 1 / 10 Time: 150s

Age
How long have sharks existed?
Largest
What is the largest fish in the world?
Skeleton
What are shark skeletons made of?
Senses
What do the ampullae of Lorenzini detect?
Oldest
Which shark may live over 270 years?
Teeth
What happens when a shark loses a tooth?
Breach
Where are great white sharks famous for leaping out of the water?
Hammer
Why may hammerheads have wide heads?
Fins
What is shark finning?
Risk
How common are fatal shark attacks?

Explanations: answer key for all 10 questions

Q1: How long have sharks existed?
Answer: Over 400 million years
They are older than trees.
Q2: What is the largest fish in the world?
Answer: Whale shark
It feeds on plankton.
Q3: What are shark skeletons made of?
Answer: Cartilage
Cartilage is lighter and more flexible.
Q4: What do the ampullae of Lorenzini detect?
Answer: Electric fields from prey
They help sharks find hidden prey.
Q5: Which shark may live over 270 years?
Answer: Greenland shark
It is the longest-lived vertebrate known.
Q6: What happens when a shark loses a tooth?
Answer: A new one moves forward
Some lose thousands in a lifetime.
Q7: Where are great white sharks famous for leaping out of the water?
Answer: South Africa's Seal Island
They ambush seals from below.
Q8: Why may hammerheads have wide heads?
Answer: To improve senses and maneuvering
Their eyes are far apart.
Q9: What is shark finning?
Answer: Cutting off fins for soup
It kills millions of sharks yearly.
Q10: How common are fatal shark attacks?
Answer: Very rare
Humans kill far more sharks than sharks kill humans.

Sharks Quiz – Ancient Ocean Hunters

Sharks are fish with skeletons made of cartilage. They have existed for over 400 million years and survived several mass extinctions. Today there are more than 500 species, from tiny lanternsharks to the whale shark.

Sharks have powerful senses. They smell blood from far away, feel vibrations with their lateral lines and sense electric fields with the ampullae of Lorenzini. Many replace their teeth throughout their lives, and some, like the Greenland shark, live for centuries.

Sharks are vital to healthy oceans, but overfishing and finning have caused many populations to crash. Fatal attacks on people are very rare. Marine reserves and bans on finning help protect these important predators.

What This Quiz Teaches

Ocean fans and students will enjoy these questions.

How old sharks are
Which shark is largest
How sharks sense prey
Which shark lives longest
Why sharks are threatened

Did You Know?

Some sharks glow in the dark.
Shark skin feels like sandpaper.
Bull sharks can swim in rivers.
Mako sharks are very fast.
Some sharks must keep swimming to breathe.