On the Air: August 2, 2015
A preserved specimen of a frilled shark at an aquarium in Paris. Credit: Citron, GNU Free Documentation License

Getting to know all the fish in the seas is a tough job. There’s a lot of ocean to cover, after all, and many species aren’t especially easy to find -- they have limited numbers or range, or they lurk in waters that aren’t often explored.

An example is the frilled shark. It looks almost nothing like most other shark species. Its body is long and sinuous, like an eel’s, and its head looks more like a snake than a fish. It has a prehistoric look, which is appropriate, since its ancestors were around at least 80 million years ago.

In Print: August 1, 2015
A green sea turtle in Hawaii. Credit: Claire Fackler, National Oceanic and Atmospheric Administration

Shortly after sea turtles hatch and enter the waves, they vanish from sight for the next two to ten years. Scientists often call these the “lost years” because no one is sure where the turtle toddlers go during this time. Until recently, many marine scientists believed the young turtles ride the waves until they gain the strength or navigation skills to actively swim. But scientists wanted to find out for sure, especially since sea turtles are endangered. Knowing where they are going and how they are getting there might make it easier to protect them.