Will the oil spill in the Gulf of Mexico create dead zones? That's the concern of University of Georgia marine scientist Samantha Joye. She's headed to the gulf to investigate how the oil and methane gas discharged by the BP Deepwater...

Marine biologists in South Carolina head out on the water to catch and tag sharks, and to collect genetic samples that will be analyzed back in the lab. Concerted efforts to understand and track shark populations are contributing to the...