Species: Hexanchus griseus

Recent discoveries of two new shark species in Puget Sound have sparked public interest and may encourage greater conservation efforts. In this seven-part series, Christopher Dunagan provides an overview of sharks in Puget Sound and some of the recent work among scientists to protect these often misunderstood creatures.

Bluntnose sixgill sharks are among the largest sharks in the world, reaching lengths of almost 16 feet. Research shows that Puget Sound may be an important place for sixgills to give birth and raise their young. We continue with part three of our series on Puget Sound's sharks.

In the final installment of our series on sharks in Puget Sound, we look at how fishing regulations have changed to protect potentially vulnerable shark species. Experts say more regulations may be needed as research evolves.