Historian pleads for return of dismembered shark parts.

British historian Dan Snow is urging people to return parts of a critically endangered smalltooth sand tiger shark that washed up on a UK beach. The shark's head and tail were taken by trophy hunters before scientists could study it. While it is not illegal to take parts of fish that have washed ashore, Snow pleaded with people to let scientists study the parts first. The shark's discovery could be significant in determining its feeding patterns and water temperatures in international waters. The smalltooth sand tiger shark is a vulnerable species with less than 200 left in the wild.