New research shows that epaulette sharks, often called “walking sharks,” can produce eggs without increasing their overall energy use.

These “walking sharks” can lay eggs without spending extra energy, rewriting what scientists thought they knew about reproduction.

When Laurie was a kid, she had recurrent nightmares that featured her getting eaten by a shark. Decades later, Laurie goes to sleep next to them (or at least in the same house). She’s the proud owner ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Being pregnant and giving birth is hard work for any species—but ...

Here’s what you’ll learn when reading this story: Chondrichthyan fishes—a group that includes rays, skates, chimaeras, and sharks—are thought to have energy intensive reproduction cycles due in no ...

The epaulette shark’s ability to “walk” on land gives it a distinct survival advantage and traces its lineage back to the Jurassic period. When most people picture a shark, they likely imagine a sleek ...

Epaulette sharks can reproduce without any measurable increase in energy use, stunning researchers who expected egg-laying to be costly. Scientists tracked metabolism, blood, and hormone levels ...