TED: A census of the ocean | Paul Snelgrove

The video discusses the importance of oceans, highlighting their productivity and biodiversity. It covers the Census of Marine Life, which aimed to improve understanding of ocean life, revealing new species and biodiversity hotspots. The history of human exploitation of oceans is explored, showing significant impacts. Technological advances in ocean research, such as ROVs and genetic barcoding, are discussed. The video concludes with challenges like ocean acidification and the need for conservation efforts.

What percentage of new life on Earth is produced by the oceans each day?

• 100%

• 75%

• 50%

• 25%

What is the term used to describe the changing expectations of ocean productivity over time?

• Ocean drift

• Aquatic transition

• Shifting baselines

• Marine evolution

Which ancient civilization began the practice of industrial fishing through salting?

• Greeks

• Romans

• Egyptians

• Chinese

What technology allows scientists to sample the deep ocean remotely?

• Remotely operated vehicles

• Satellites

• Drones

• Submarines

How do sound waves help in ocean exploration?

• They illuminate the ocean floor

• They measure water temperature

• They bounce off objects like fish

• They track ocean currents

What is the purpose of genetic barcoding in marine research?

• To analyze water salinity

• To measure ocean depth

• To identify species accurately

• To track fish migration

What significant event highlighted the importance of biodiversity data in the Gulf of Mexico?

• Coral bleaching

• Deepwater Horizon oil spill

• El Niño

• Hurricane Katrina

What percentage of ocean species is estimated to still be undiscovered?

• 91%

• 50%

• 25%

• 9%

What is the estimated number of different types of microbes in the oceans?

• 1 billion

• 500 million

• 1 million

• 100,000

Why is global collaboration crucial in ocean conservation?

• Oceans are isolated

• Oceans are interconnected

• Conservation is a local issue

• Marine organisms respect boundaries