Footage from a previous study supports this idea. This video spotted a hammerhead shark swimming during a deep dive off the coast of Tanzania. The shark's gills are almost invisible, suggesting ...

Klimley: Yes. The U.S. Navy, in fact, once considered the hammerhead the third most dangerous species after the great white and the tiger shark. (There are nine species of hammerheads, but the ...

So seeing a hammerhead shark (Sphyrna tiburo) embryo, halfway through its five-month development, is very unusual. Access to growing embryos is key for developmental biologists like me as we try ...

WASHINGTON— The Center for Biological Diversity submitted a petition today urging the National Marine Fisheries Service to protect the great hammerhead shark under the Endangered Species Act. Today’s ...