long — the aptly named great hammerhead shark. Mackerel sharks (order Lamniformes) are a large group consisting of about 22 species in 10 different families. Some well-known mackerel sharks ...

The ancestors of hammerhead sharks appeared on Earth around 20 million years ago. Over time, evolution saw it split into different species, with some getting smaller and its hammerhead changing in ...

Hammerhead sharks may hold their breath. Why? Hammerhead sharks may hold their breath. Why? Which has a stronger bite: hammerheads or tiger sharks? Which has a stronger bite: hammerheads or tiger ...

Now, the hammerhead has that really unusual ... Whereas if it's just a gray-colored reef shark, there are lots of different species and they all look alike. NOVA: Have you ever felt in danger ...

This remarkable young sea is thought to be around five million years old and home to nearly 900 species of fish and ... ago schools of hundreds of hammerhead sharks were seen at the seamount ...

LA PAZ, Mexico— The Center for Biological Diversity has filed a groundbreaking lawsuit seeking protection for three species of hammerhead shark under Mexico’s Standard NOM-059-SEMARNAT-2010, the ...

Hammerhead sharks ... it's likely what gave the sharks their remarkable evolutionary advantage. "Instead of having to compete with all the other warm coastal shallow shark species, they can ...

I was once at the surface playing low-frequency sounds over a speaker to attract sharks. A hammerhead shot up from ... They're not a species that chases down prey such as white sharks do with ...