Ocean Life and Fish Conservation

The video explores the ocean's ecosystem, highlighting the role of plankton in the food chain and the impact of sunlight on marine life. It discusses different fish types, their habitats, and the history of the North American fishing industry. A cautionary tale of the orange roughy illustrates the consequences of overfishing, emphasizing the need for sustainable practices to protect marine biodiversity.

What percentage of the Earth's surface is covered by oceans?

• One-third

• Half

• Two-thirds

• Three-quarters

What is the primary role of phytoplankton in the ocean?

• To decompose organic matter

• To produce oxygen through photosynthesis

• To provide shelter for fish

• To consume zooplankton

Which of the following is a characteristic of zooplankton?

• They are found only in freshwater

• They are all plants

• They can be larvae of larger animals

• They are all microscopic

Which type of fish is known for having white meat?

• Mackerel

• Sardines

• Cod

• Tuna

What is a significant factor in the decline of fish populations near the Grand Banks?

• Pollution

• Overfishing

• Climate change

• Invasive species

What is the primary reason for the decline of the orange roughy population?

• Pollution

• Overfishing before they reproduce

• Climate change

• Natural predators

How long can an orange roughy live according to some scientists?

• 200 years

• 150 years

• 100 years

• 50 years

What is a unique feature of the orange roughy compared to other fish?

• It is a freshwater fish

• It reproduces quickly

• It matures slowly

• It lives in shallow waters

Where was the orange roughy first discovered?

• Western Pacific

• Indian Ocean

• Mediterranean Sea

• Atlantic Ocean

What lesson does the story of the orange roughy teach us about deepwater ecosystems?

• They are unaffected by climate change

• They are resilient to human activities

• They are well-understood

• They are vulnerable to overfishing