Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The Greenland shark ...

Predators and prey in the ocean rely on chemical signals for survival, but this vital sensory mode can also be their Achilles ...

One of the difficulties with ageing these sharks has been in getting access to samples of vertebrae. Paul Fanning UN FAO A cross section of a whale shark vertebra showing the growth bands This ...

Researchers found that the mineralized microarchitecture in thresher shark vertebrae changes in the front and the back of the body, and these anatomical modifications may support their unique tail ...

The fossils range from giant shark vertebrae to dinosaur fossils. Dipti Kapadia has the details. Photo: The University of Queensland ...

Measuring the Greenland shark’s growth rate is challenging because individuals are rarely recaptured. However, one shark tagged in 1936 had only grown 2.3 inches when it reappeared 16 years later.