Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Pearlfish don't have scales ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American A new study has revealed how marine pearlfish ...

Add Popular Science (opens in a new tab) More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results.