Next to the West Coast, where algae has been poisoning shellfish and subsequently people.In recent years, toxic algal blooms have been more potent and lasted longer.That has scientists trying to understand whether climate change could be contributing to the problem.Our report comes from special correspondent Katie Campbell of KCTS Seattle.She works for the environmental public media project EarthFix.Every family has its legends.For Jacki and John Williford and their children, it's the story of a miserable camping trip on the Olympic Peninsula in the summer of 2011.It all started when the Willifords did what Northwest families do on coastal camping trips.They harvested some shellfish and cooked them up with garlic and oregano.Oh, they were amazing.I was like, wow, these are pretty much the best mussels I have ever eaten.And I think I said in a text to Jacki.They were the best mussels in the whole wide world.Is that what you said?Yes.Two-year-old Jessica and 5-year-old Jaycee were the first to get sick.Next, John got sick.They just were so violently ill, and I just knew it had to be the mussels.And that next week, I called the health department and said, I think we got shellfish poisoning or something from the shellfish.And that's when all the calls started to come in.It turned out that Willifords were the first confirmed case in the United States of people getting diarrhetic shellfish poisoning.DSP comes from eating shellfish contaminated by a toxin produced by a type of algae called Dinophysis.