Imagine creatures, up to 14 feet long, swimming in creeks and streams along the densely populated East Coast of the United States. Surprisingly, such prehistoric animals still exist, and NOAA and partner scientists are using innovative techniques to track them through Chesapeake Bay tributaries.

NOAA Fisheries biologist Jason Kahn holds an Atlantic sturgeon as part of a collaborative research project to study the species' spawning behavior. (Image credit: NOAA)