Ocean Literacy

The world's ocean covers approximately ___ percentage of the Earth's surface.

• 35%
• 70%
• 50%
• 95%

Where does most of the oxygen on Earth come from?

• Land plants (tropical rain forest)
• ocean plants (phytoplankton)
• air
• animals

We are dependent on the ocean

• True
• False

What percentage of marine debris is from land-based sources?

• 80%
• 72%
• 59%
• 35%

Of the 33 animal phyla that exist, how many occur in the sea?

• 33
• 32
• 28
• 18