Text and Photo via DISCOVERY
National Geographic shares that two scientists from the Interdisciplinary Center of Marine Sciences in La Paz, Mexico, have studied the specimen and have determined it's a 22-inch-long dusky shark fetus with a single, functioning eye that's front and center on its head.
The fetus was discovered after fisherman Enrique Lucero León "legally caught" a pregnant dusky shark near Cerralvo Island in the Gulf of California.
Biologist Felipe Galván-Magaña of the center in La Paz told National Geographic that when León sliced open his catch, he found the odd-looking male embryo along with nine normal siblings. "He said, That's incredible -- wow," according to Galván-Magaña.
Galván-Magaña and colleague Marcela Bejarano-Álvarez are ready to release a paper documenting their research. I haven't seen it yet, but apparently the scientists X-rayed the fetus and reviewed previous studies on cyclopia. If you click on that last hyperlink, you'll see images of a human baby with the disorder, characterized by one eye and often other facial problems.