Student Scientists Give Charleston Harbor a Health Check

Graduate researchers from College of Charleston recently shared findings at a marine science gathering near Fort Johnson. Their work zeroes in on two big questions about the harbor. One team hunts for tiny plastic bits in water and mud. The other tracks how blue crabs make babies.

Maddie Townsend, a third-year marine biology student, leads the plastic hunt. She checks water and sediment at different spots. Then she compares those levels to animals with various eating habits. So far, every single sample contains microplastics. Sites near the Ravenel Bridge show higher amounts. Areas around Fort Johnson run cleaner. Human activity likely drives the difference.

Melanie Thorn, in her second year of environmental studies, handles the crab project. She pulls crabs from the harbor to study reproduction. Over five months, she keeps finding females loaded with eggs. That steady pattern suggests a healthy population. She also examines ovaries under a microscope. Development stages vary widely, meaning crabs cycle continuously. Her year-long study runs through March.

Both students want their data to guide real decisions. Thorn hopes fisheries managers use the info to keep crab numbers strong. Townsend feels proud to help a community that loves its coast. She plans to share results locally soon. The colloquium also covered fish farming, animal health, and conservation efforts.