If you want to know something about hammerheads, you ask Pete Klimley. We did, and we did. Here's the result. Klimley makes a breath-hold dive among hammerheads. NOVA: What's it like to swim ...

Hammerhead sharks can hold their breath to survive almost freezing-cold waters during deep dives, a study has found. The study, published in the peer-reviewed journal Science on Thursday, found ...

Dive category: Specialist. Hammerhead sharks are extremely shy. To avoid disturbing them a "rebreather" is recommended, which requires specialist training. If you are very lucky you might catch a ...