A shark’s age can be surprisingly hard to pin down, even when the animal is swimming in plain sight. For zebra sharks, researchers have now found a clue in blood: chemical marks on DNA that shift as ...

Backlit with the beams from a flashlight, a figure came into view inside the leathery sac. Called a mermaid's purse because of its shape and size, the zebra shark egg's translucence revealed an ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. A new study introduces a non-lethal method for aging sharks, vital for conservation efforts.

Shedd Aquarium has sent four zebra shark eggs to contribute to a conservation effort for the endangered species, marking the Chicago nonprofit's first delivery to Raja Ampat, Indonesia. As a founding ...

Add Yahoo as a preferred source to see more of our stories on Google. A handler in Indonesia holds Jelly, the first of seven eggs bred at Point Defiance Zoo and Aquarium to hatch as part of a global ...

SAN DIEGO — For the first time ever, researchers have captured video of three endangered zebra sharks mating in the wild in the South Pacific, providing scientists worldwide with unprecedented ...

NatGeo has an inside look at programs helping the threatened species, including a program that reintroduces baby sharks back into the ocean. Photograph by David Doubilet and Jennifer Hayes, National ...

LAS VEGAS — When Becky O’Brien dangles herring over a tank of over a dozen swimming sharks, it only takes seconds for a zebra shark to snatch the fish from her tongs. The lead aquarist said she always ...