Finding Home: How Fish Navigate and Why it Matters for Fisheries Management

Every spring, red drum return to North Carolina’s coastal sounds. Not just to the state, but to specific sounds, creek mouths, and even the same stretches of marsh. Data from our Foundation’s satellite tagging project is confirming what many have long suspected: individual fish revisit the same estuarine areas year after year with a consistency that feels less like wandering and more like going home.

This pattern is known as site fidelity, and it raises an intriguing question. How does a fish that may spend the winter hundreds of miles offshore find its way back to the same patch of estuarine water months later? The answer lies in a mix of biological tools refined over hundreds of millions of years.