Quiz: How Much Do You Know About The Ocean?

by Christine Tusher June 08, 2022

How Much Do You Know About the Ocean?

We at Biossance are committed to ocean conservation. Our passion for protecting marine environments runs deep, from our sustainable packaging to our sugarcane-derived, shark-saving hero ingredient, squalane. And today, in honor of World Oceans Day, we’re donating 100% of our sales to Oceana, the largest international advocacy non-profit focused solely on conservation.

But saving the oceans means more than just clean beaches and healthy corals. (Although both are certainly important!) Our oceans provide vital support for all life on earth, and yet most of us know very little about them.

Test your knowledge with this quick and easy quiz, then scroll down to see the answers and learn why they’re important.

How Much Do You Know About The Ocean?

1) How much of our oxygen is produced by the ocean?

A) 25%
B) 90%
C) 50%
D) 70%

 

2) How many animal species live in the ocean?

A) About 1 million
B) About 400,000
C) More than 10 million
D) About 5 million

 3) How much of the earth’s water do our oceans contain?

A) 50%
B) 81.3%
C) 96.5%
D) 70%

 

4) How deep is the deepest part of the ocean?

A) 7 miles deep
B) 11 miles deep
C) 2 miles deep
D) 25 miles deep

5) How much of our oceans have been explored so far?

A) 75%
B) More than 90%
C) Less than 5%
D) 10%

On 6/8, World Oceans Day, we are donating 100% of proceeds to help Ocean Conservation

Answer Key:

1) How much of our oxygen is produced by the ocean?

D) The oceans produce about 70 percent of the world’s oxygen. 

Most of the Earth’s oxygen comes from marine plants, such as phytoplankton and kelp. One type of phytoplankton, Prochlorococcus, is so small that millions can fit into a drop of water, and yet scientists say it provides the oxygen for one in every five breaths we take.

2) How many animal species live in the ocean?

A) About 1 million animal species live in the ocean.

Scientists estimate that about a million different animal species reside in the ocean. Even more exciting: we’ve only classified about 9% of them. That makes it even more important to protect our oceans, as so many cool creatures could become extinct before we have a chance to discover them.

3) How much of the Earth’s water do our oceans contain?

C) Our oceans contain 96.5% of the Earth’s water.

Just how much water is that? NOAA's National Geophysical Data Center estimates that there are 321,003,271 cubic miles of water in the ocean. That's enough water to fill about three hundred fifty two quintillion, six hundred seventy quadrillion gallon-sized milk containers. (And, no, we’re not making that number up!)

4) How deep is the deepest part of the ocean?

A) The ocean floor is 7 miles down at its deepest point.

Located in the Pacific Ocean’s Mariana trench, the Challenger Deep is the deepest part of the ocean at 7 miles down. To give you some perspective, that’s deeper than Mount Everest is tall.

5How much of our oceans have been explored so far?

C) Less than 5 percent of our oceans have been explored so far.

Our oceans cover about 70 percent of the Earth’s surface area, yet less than 5% has been explored. This has made protecting them difficult. After all, it’s hard to protect what you don’t know. Only about 7% of our oceans are designated as marine protected areas. Learn more at Oceana.org

Christine Tusher


Christine Tusher
Christine Tusher

Author

As a lifestyle writer and journalist, I’m excited to bring my passion for storytelling to Biossance as an Engagement Content Writer. Two things you should know about me: I have a deep love of the ocean (especially sharks) and I’m obsessed with clean beauty. My bathroom cabinet is literally overflowing with my many-layered sustainable skincare routine. This combo is what led me to buy my first bottle of Vitamin C Rose Oil. I was so impressed by the way it improved my skin that I wanted to shout this brand from the rooftops. Three years later, and here I am doing just that. I’m excited to be on this journey of clean beauty innovation with Biossance, and to share it with you here on the blog.



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