How the ghost shark lost its stomach
Lack of digestive organ in fish and other animals linked to genes
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2013/12/sm_nostomach.jpg?fit=860%2C460&ssl=1)
LOOK MA, NO STOMACH A ghost shark manages just fine, thank you, without the highly acidic digestive zone known as a stomach. And now scientists have a better understanding, from a genetic perspective, why the fish and other animals lack the organ.
Kelvin Aitken/VWPics/Associated Press