When we think of important ocean habitats, coral reefs often steal the spotlight. But underwater meadows and coastal wetlands—like seagrass beds, kelp forests, and salt marshes—are just as vital.

These ecosystems are some of the most productive on Earth, quietly working behind the scenes to support marine life, store carbon, and protect coastlines. Without them, ocean health—and even our own—would suffer.

Seagrasses are flowering plants (not seaweeds!) that grow in shallow, salty, and brackish waters all around the world. Their long, blade-like leaves form dense underwater meadows that sway with the tides.

Kelp forests are found in colder coastal waters and are made up of giant brown algae. Some kelp species, like giant kelp, can grow up to 60 meters tall, creating underwater "forests" that reach toward the sunlight.

Salt marshes are grassy wetlands that flood and drain with the tides. They thrive in sheltered coastal areas like estuaries and bays.

Although they might seem less glamorous than coral reefs or the open sea, seagrasses, kelp forests, and salt marshes are true ocean powerhouses.

They:

Protecting them means protecting fisheries, fighting climate change, and safeguarding coastal cities.

Seagrass beds, kelp forests, and salt marshes don’t just decorate the ocean—they actively breathe life into it and shield it from harm. By nurturing young marine life, locking away carbon, and guarding coastlines, these ecosystems prove that even the quietest parts of the ocean can have the loudest impact.

Next time you walk by a coastal marsh or dive into a kelp-draped reef, remember: you’re witnessing one of nature’s greatest defenses in action.

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