Marine researchers are investigating the death of a basking shark that washed up recently in Wellfleet. Here's what we know.

Human-made structures act as artificial reefs, luring plankton and, in turn, Earth’s largest fish. That could put whale sharks at risk of ship strikes.

Shark depredation is a rising issue in recreational fishing, especially in Florida, where sharks steal fish straight off anglers' lines. Researchers harnessed citizen science -- social media, angler ...