Imagine that something is wrong with your local estuary. Maybe there's a sign posted on the shore that reads, "Beach Closed. No Swimming." Or maybe the local fishermen are complaining that the fish don't seem healthy and have sores on them. Or maybe there have been stories in the news about how some of the animals that live there are becoming threatened or endangered. Be a sleuth and use this page to solve an estuary mystery!
For some helpful background, go to the Common Challenges page.