Shellfish vs Ocean Acidification: Can Lobsters Save the Seas 2026

Shellfish may hold the key to neutralizing ocean acidification, one of the greatest threats to marine life. As lobsters and other shellfish struggle in warming, acidic seas, scientists are exploring innovative ways to harness their natural processes to combat climate change. The Gulf of Maine, warming faster than 99% of the world's oceans, serves as a stark example of the challenges ahead.

The Growing Threat of Ocean Acidification

Ocean acidification occurs when the ocean absorbs excess carbon dioxide from the atmosphere, leading to a decrease in pH levels. This chemical change makes it harder for shellfish like lobsters, clams, and oysters to build their calcium carbonate shells. According to recent studies, the ocean absorbs about 31% of atmospheric carbon, and this percentage is expected to rise as emissions continue.

How Acidic Seas Affect Shellfish

For species like the American lobster, acidic waters can impair shell formation and reduce survival rates. Scott Lord, a third-generation lobster fisherman from Maine, has observed a dramatic drop in inshore lobster populations over the past 15 years. "Why are there not clams where there used to be clams? Why are they not coming back, no matter what we do?" he asks. The answer lies in the changing chemistry of the ocean.

Marine Carbon Dioxide Removal (mCDR) Explained

Marine carbon dioxide removal (mCDR) is a set of techniques designed to enhance the ocean's natural ability to absorb and store carbon. One promising approach involves using shellfish to sequester carbon in their shells, which eventually sink to the ocean floor. Scientists at the Woods Hole Oceanographic Institution, including Adam Subhas, are leading the LOC-NESS (Locking Ocean Carbon in the North-east Shelf and Slope) initiative to research these methods.

The LOC-NESS Initiative

LOC-NESS aims to evaluate the feasibility of mCDR in the North-east Shelf and Slope region. By studying how shellfish and other marine organisms interact with carbon, researchers hope to develop scalable solutions. "We're trying to understand if we can nudge the ocean to absorb more carbon without causing unintended harm," says Subhas.

Comparing Traditional Mitigation vs. mCDR

Key Takeaways

• Ocean acidification threatens shellfish populations worldwide.
• Shellfish can play a role in marine carbon dioxide removal.
• Initiatives like LOC-NESS are crucial for understanding mCDR.
• Combining emission cuts with mCDR offers the best hope for our oceans.

FAQ

As the ocean continues to warm and acidify, the need for innovative solutions becomes more urgent. Shellfish, once seen only as a delicacy, may now be a vital ally in the fight against climate change. By supporting research and sustainable practices, we can help ensure that future generations enjoy both healthy oceans and thriving lobster rolls.

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