Shark Research

Sounds kinda weird.. but studying nearly identical coral reef systems off Australia, my collaborators and I discovered something unusual on the reefs subjected to nearly exclusive fishing of sharks—fish with significantly smaller eyes and tails. This provides evidence of body shape changes in fish due to human-driven shark declines from overfishing. In the study, our...

By Dr. Steve Kessel, Director of Marine Research at Shedd Aquarium Did you know that over 400 species of sharks call our oceans home? These predators originated around 450 million years ago, persisting through five mass extinction events since that time. Perhaps not as old as dirt, but sharks are older than trees by about...