When we think of disappearing reefs, corals often come to mind, with their vibrant colors and diverse shapes. However, another type of reef is equally crucial to our ecosystems: oyster reefs. Though less visually striking, these “nature’s filters” are vital to our oceans. 

Oyster reefs are critical not just for their economic value – providing billions of dollars (providing jobs for over 3,000 people, attracting tourism, etc) – but also as natural storm barriers and habits for marine life. Most shockingly, they clean the water they inhabit. A 2018 experiment, the “Oyster Filtration Demonstration,” showcased this ability: two tanks with algae-filled water, one containing ten oysters and the other empty. After just one hour, the oyster tank was crystal clear, while the other remained murky. This simple yet essential experiment highlights how oysters purify their environment, benefiting other marine species. 

Ms. Kennedy, a Lakeside Middle School biology teacher, emphasizes that losing these natural filters would result in murky, unhealthy waters, making it difficult for fish and other animals to thrive. Without oyster reefs, the balance of our ecosystem would crumble. Adding on, this will affect us as well. “Water qualities affect the ecosystem, which affects us,” she said. 

Unfortunately, these reefs face numerous threats: overharvesting, pollution, habitat destruction, and climate change. According to Ms. Kennedy, “Even if we don’t overharvest oysters, there will still be a decline in the oyster population.” Furthermore, oyster populations would still decline due to ocean acidification. Rising carbon dioxide levels, known as the “carbon sink,” cause the ocean’s pH to drop, dissolving the calcium the oyster larvae need to build their shells. This results in the larvae’s death before reaching adulthood.

The situation is dire, and the numbers are staggering: according to the Museum of the Earth, 85 percent of oyster reefs have already disappeared. But there’s hope. We can all take part in saving these essential creatures by:

1. Participating in oyster shell recycling programs, as oyster larvae tend to attach to old shells to grow, making a space for these larvae to thrive. 

2. Buying oysters from sustainable farmers.

3. Choosing local farms to reduce your carbon footprint and support responsible practices.

4. Talking to oyster farmers. 

5. Educating others. 

Ms. Kennedy points out that by making these small changes, we can help restore these valuable ecosystems and protect our oceans for future generations. If you are wondering which local farm to get the oysters from, she also said, “Netarts Bay in the Pacific Northwest has the best oysters in the world!”

Oyster reefs may not be as visually stunning as coral reefs, but their importance cannot be overstated. They are nature’s filters, storm barriers, and habitats, all compiled into one. By understanding their significance and taking action to protect them, we can ensure the health of our marine ecosystems for years to come. Let’s act now to preserve these unsung heroes of our oceans!