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100

Which ocean is the largest and deepest?

The Pacific Ocean

100

How many bones do sharks have?

Zero

100

What percentage of the ocean has never been mapped, explored, or even seen by humans?

80%

100

Which fish is famous for migrating thousands of miles to spawn?

Salmon

100

Which invertebrate has a symmetrical body and can regenerate lost limbs?

Starfish

200

What is a group of seals called?

A colony

200

How many continents does the Indian Ocean touch?

3 continents

200

What type of whale is actually a dolphin? 

Orcas

200

In which ocean is The Bermuda Triangle located?

Atlantic

200

Which type of fish can inflate its body to scare off predators?

The pufferfish

300

What type of jellyfish is known for its beautiful petals and can be deadly to humans?

Jellybox fish

300

What significant environmental issue is currently threating coral reefs worldwide today?

Coral bleaching

300

What causes fish to fish drown?

When there's not enough oxygen in the water

300

What part of the shrimp's body contains the heart?

The head

300

What do sea turtles come on land once a year to do?

Lay their eggs 
400

Often considered the smallest-known species of shark, the dwarf lanternshark is only found in a small area of what tropical body of water?

Caribbean Sea

400

What causes tides?

Tides are caused by the gravitational pull of the moon and the sun

400

What are effects of the venom of a stonefish? (Name at least two that's not pain)

Stonefish venom is extremely painful and can be lethal. It can cause shock, paralysis, and tissue death if not treated quickly.

400

How many islands are in the Pacific Ocean?

25,000

400

Where are sea urchin's eyes located?

Sea urchins do not have traditional eyes, but they can sense light and dark

500

What can you hear when you put your ear to a seashell?

The sound you hear is the echo of blood circulating in your own ear

500

How long can a whale shark grow?

Whale sharks can grow up to 40 feet (12 meters) long

500

How do lobsters communicate?

Lobsters communicate by releasing pheromones and by making noises with their claws and antennae.

500

Which fish has a transparent head that lets you see its brain?

The barreleye fish

500

 How deep is the deepest part of the ocean?

The deepest part of the ocean is the Mariana Trench, which is about 36,070 feet (10,994 meters) deep.

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