It was starting to get old: "I wish we knew," I said. Then we did.
There was knock at the door, and our assistant told us a sunken Spanish galleon had been found in the Gulf of Mexico. It might be loaded with gold, but it's too cramped and dangerous for scuba gear. Just the opportunity for the most famous (and only) mermaid and merman treasure hunters in the world! Before long, we were on our customized jet (the pool is small, but it's hard to fly with anything heavier), bound for Houston.