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 wounds on the carcass of a large white shark washed ashore near Portland in Victoria in 2023, the Flinders University-led study identified that killer whales were responsible for consuming the mid-section containing the nutritionally rich liver.

The first whole genome study of mitochondrial DNA and high-resolution scans of nuclear DNA from endangered shortfin mako sharks in the Atlantic Ocean show relatively high genetic diversity, despite severe overfishing for their valuable meat and fins. Nuclear DNA shows that mako males move freely across the Atlantic spreading their genes, but mitochondrial DNA suggests female makos return to key sites in one hemisphere to pup, confirming two distinct populations for the northern and southern hemispheres.