James MacGuffin, famous archaeologist goes on one of many expeditions to Egypt. He crosses the Dead Sea from Jordan, and about halfway through, he is amazed at what he finds. A small group of large fish are swimming through the water! He quickly scans the internet via a hotspot on his ship and comes to the conclusion that he has discovered a new species.
What characteristics would a fish have to evolve to survive in the extremely salinity of the Dead Sea? Would he be able to prove he discovered a new species or would the world discredit him?