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Learn About 5 Scary Consequences to Ocean Acidification


Learn About 5 Scary Consequences to Ocean Acidification

We’ve all heard it before: climate change is affecting our planet. And not in a good way.

But most of what we hear, is about how climate change will affect our atmosphere.

In this article, we’ll cover a less-discussed, but just-as-important climate change issue: ocean acidification.

Read this article to learn…

  1. How ocean acidification happens
  2. And 5 scary consequences to ocean acidification
  3. What will happen if we don’t slow down ocean acidification
  4. How to slow down ocean acidification
  5. A summary of the above points

Let’s get started!

A.    How ocean acidification happens

Since the industrial revolution, we have begun to burn a lot of fossil fuels. In doing so, we have released a lot of carbon dioxide (CO2) into the air.

As we mentioned earlier, we know that CO2 affects the atmosphere. But what most people don’t know, is that CO2  affects our oceans.

ocean acification diagram-Consequences to Ocean Acidification - Dolphinaris in Cozumel

Eventually…some of that CO2 falls back down into our oceans. How much?

Our oceans have absorbed about HALF of all human-produced COemissions.

When CO2 dissolves in our oceans, it increases hydrogen ions. Those hydrogen ions, then bond with carbonate ions to form carbonic acid. This leads to a lower ocean pH level.

In other words…

When we pollute into the air, the ocean gets more acidic.

Take a look at the diagram below to see an illustration.

future and past ocean ph levels-Consequences to Ocean Acidification - Dolphinaris in Playa del Carmen

You see? The higher the CO2, the lower the ocean pH levels (lower pH, means more acidic).

Now let’s examine…

5 scary consequences to ocean acidification.


Sometimes called a “sea butterfly”, pteropods are tiny marine creatures. They’re actually about the size of a small pea.

While they may be small in stature, they are largely connected to the food web of the ocean.

Many fish, and even krill, have pteropods as part of their diet, or eat animals that eat pteropods.

Watch what happens to a pteropod’s shell after spending 45 days in sea water with a pH level of 7.8 (more on this later).

pteropods dissolving 45 days-Consequences to Ocean Acidification- Dolphinaris

As you can see—almost overnight—the pteropod’s shell rapidly dissolved

2.       SHELLFISH

As we mentioned earlier, due to COpollution, carbonate ions are bonding with hydrogen ions.

Why is this important?

Because shellfish need carbonate ions to help form their protective shells made of calcium carbonate (CaCo3).

Shellfish include mollusks, crustaceans, sea-urchins, crabs, planktons and other marine species.

These species are being robbed of a fundamental building block necessary to their survival.

3.      FISH

While fish aren’t don’t suffer the same dire consequences, they are still affected nonetheless.

They need to expel any excess acid. How? Through their gills, kidneys, and intestines. This process takes precious energy. Energy that could have been used to digest food or escape predators.

It also means fish sizes will get smaller.

fish shrinking in size due to climate change-consequences to ocean acidification - Dolphinaris in Barcelo


Coral reefs are also composed of calcium carbonate. They use it to build their “hard skeleton”. This is especially true in the early stages of development.

With more carbonate ions bonding with hydrogen ions, that means less carbonate ions available for coral reefs.

The result?

A more brittle coral reef that has trouble reproducing.

coral reefs in florida keys 1980-2010-Consequences to Ocean Acidification- Dolphinaris in Tulum

Not only can entire coral reefs die, but the organisms that depend on it as well.

These species include red snapper and grouper.


We know COpollution is getting worse. This also means, our ocean’s pH level will also continue to decrease (meaning more acidic).

Remember that pteropod shell we showed you dissolving?

That was in seawater with a pH level of 7.8.

As you can see above, scientists predict our ocean will reach a pH level of 7.8 in less than a century.

co2 and ph levels in ocean graph diagram-Consequences to Ocean Acidification - Dolphinaris in Cancun


It would be nearly impossible to stop ocean acidification.

But what we can do is, slow it down. This will give our ocean a chance to acclimate to the new pH level.

So how we slow down ocean acidification?

By weening ourselves off fossil fuels.

This means using…

  • Solar panels like Tesla’s new shingle-shaped solar roofs.
  • Public transportation that consolidates travelers into one vehicle.
  • Supporting green companies and organizations
  • Attempting to shrink your carbon footprint

How big is your carbon footprint? Find out with this cool carbon footprint calculator.


  1. Burning fossil fuels leads to climate change.
  2. Climate change leads to higher levels of COpollution in our ocean.
  3. A higher ocean pH level leads to ocean acidification.
  4. Ocean acidification prevents shellfish and coral reefs from forming shells.
  5. In the end, our ocean suffers because everything is connected ecologically.

This concludes our article ‘Learn About 5 Scary Consequences to Ocean Acidification’. If you enjoyed, please Like or Share on Facebook! Let us know in the comments below any clever ways you have been able to shrink your carbon footprint.


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