They swim in troubled waters. Sharks are under threat worldwide, so I was devastated by headlines last week about a finless lemon shark washing ashore at Australia’s Darwin beach. Locals were stunned, and the discovery raised concerns about a larger finning operation. Shark finning is horrendous — it’s driven by demand for fins that are primarily used in soup. The United States serves as a source of demand for shark fins, which is why I’ve been working with Oceana to help legislators pass the Shark Fin Trade Elimination Act, a ban on buying and selling fins nationwide.