Researchers in New Zealand have made what they believe is the first recording of a shark actively making noise. By Yan Zhuang Dolphins whistle. Whales sing. Fish croak, chirp, grunt, hum and growl.

Researchers believe the sounds are made by the sharks snapping their flattened teeth together, possibly as a stress or warning signal. This discovery challenges the long-held belief that sharks are ...

Sharks are a remarkable, diverse group of ocean-dwellers that inhabit marine ecosystems all over the world. From the massive, gentle giant whale shark to the bioluminescent dwarf lantern shark, there ...