Ocean quahogs, also known as arctica islandica, are a species of bivalve mollusks found in the North Atlantic Ocean. They are slow-growing, long-lived, and are capable of reaching ages of over 500 years. This makes them the longest-living non-colonial animals known to science.
Quahogs are often used as "biological indicators" to study the ocean's past, including changes in temperature, salinity, and ocean chemistry. By analyzing the growth patterns of the shells, scientists can gain a better understanding of the conditions that existed in the ocean at different times over the past few centuries.
In addition to their long lifespan, ocean quahogs are also notable for their tough shells, which protect them from predators and allow them to withstand harsh ocean conditions. This, along with their ability to adapt to changing conditions, has enabled them to survive and thrive in the North Atlantic for centuries.