A previously unknown shark once swam around the shores of the U.K. more than 70 million years ago. The new species, named ...

Today, sharks are classified among the elasmobranchs, which also includes the rays and skates. Number of species ... measured 12 by 5.5 by 3.5 inches. Most travelled shark: A blue shark (Prionace ...

The angel shark does not want to ... army of people to track them. But the most promising place for deploying eDNA may be Earth’s oceans, where many species remain unknown and many threats ...