University of Miami Rosenstiel School of Marine & Atmospheric Science published a new study, documenting unexpected consequences following the loss of great white sharks from an area off South Africa. The study revealed that the disappearance of great whites has led to the emergence of sevengill sharks, a top predator from a different habitat. A living fossil, sevengill sharks closely resemble relatives from the Jurassic period, unique for having seven gills instead of the typical five in most other sharks.