The Changing Ocean: Human Impact and Climate Change

Plastic pollution ocean.

The ocean is changing faster than ever—warming waters, rising seas, and plastic pollution threaten marine life and ecosystems. But how do these changes happen, and what can we do to protect our blue planet? Let’s explore the biggest challenges facing the ocean today.

Climate warming representation Earth.

What Is Climate Change Doing to the Ocean?

Learn how climate change is reshaping the ocean through warming waters, acidification, and rising seas—and what it means for life on Earth.

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Aerial view of a scallop shell with 'LESSON 2' text over it.

Overfishing and Bycatch: What Happens When We Take Too Much?

Explore how overfishing and bycatch harm ocean life—and how smarter fishing and conscious choices can help protect marine ecosystems.

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Rubbish floating in the ocean.

How Does Plastic End Up in the Ocean?

Explore how ocean pollution—plastic, chemicals, noise, and light—is harming marine life, ecosystems, and even people. Learn how we can stop it together.

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Dead sea no life showing.

What Are “Dead Zones” and Why Do They Happen?

The ocean powers life on Earth—providing oxygen, food, climate balance, and more. Discover 6 ways it sustains us and why its protection is vital.

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Oil spillage ocean.

Oil Spills, Chemicals, and Toxic Waste in the Ocean

Explore the threats of oil spills, toxic waste, and chemicals in the ocean—and how pollution puts marine ecosystems and human health at serious risk.

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The ocean has more stories to tell—keep going!

Where to next?

Keep exploring marine science or discover more ways to be part of the wave

A large group of dolphins swimming in a blue ocean.