For the first time, DNA evidence has confirmed killer whales in Australia hunted a white shark for its liver.Based on DNA analysis from the bite ...

Sharks and rays have populated the world's oceans for around 450 million years, but more than a third of the species living today are severely threatened by overfishing and the loss of their habitat.

Sharks and rays have populated the world's oceans for around 450 million years, but more than a third of the species living ...

This process uncovered the DNA of two animals: orcas, also known as killer whales, and broadnose sevengill sharks. Orca DNA was linked to the largest bite wound, found in the center of the shark, ...

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