High Seas Quizizz

What event took place just 50 years ago according to the text?

• Humans ventured to the Moon

• The first deep-sea coral reef was found

• The first blue whale was discovered

• The first international ocean conservation treaty was signed

What is the primary threat to dolphins mentioned in the text?

• Sharks

• False killer whales

• Giant squids

• Human fishing nets

Where is a sanctuary for blue whales located?

• The Arctic Ocean

• The Mediterranean Sea

• The Great Barrier Reef

• The Gulf of California

What is the most numerous fish on the planet?

• Sardines

• Anchovies

• Tuna

• Lantern fish

What role do phytoplankton play in the ocean ecosystem?

• They are deep-sea scavengers

• They produce half the oxygen we breathe

• They are top predators

• They are the largest animals in the ocean

What is the average depth of the oceans?

• Two kilometers

• Four kilometers

• Six kilometers

• Eight kilometers

What is the primary food source for deep-sea animals?

• Marine snow

• Coral polyps

• Phytoplankton

• Seaweed

What is the main threat to deep-sea coral reefs?

• Overfishing

• Deep-sea fishing nets

• Pollution

• Climate change

What is the most numerous seabird mentioned in the video?

• Albatross

• Giant petrels

• Wilson's petrels

• Black-browed albatross

What is the main reason for the decline of bluefin tuna?

• Habitat loss

• Pollution

• Overfishing

• Climate change