article_snippet: It brings new meaning to the phrase 'shark attack'.
article_snippet: An expert said there are relatively few reports of pinnipeds, or seals, preying on sharks in general, and in all cases these involved smaller sharks .
article_snippet: Blue sharks, like the one above, are one of the ocean's top predators with a sleek body and mouth full of teeth. 
article_snippet: Dr Neil Hammerschlaf, a marine biologist at the Rosenstiel School of Marine and Astmospheric Science said this behaviour may have serious implications for blue sharks, as blue sharks numbers are already in decline due to over fishing. '
article_snippet: There are relatively few reports of pinnipeds (seals) preying on sharks in general and in all cases Blue sharks.
article_snippet: These observations are important not just for understanding the interactions between these two species but more broadly for these two species implications in understanding the trophic ecology of pinnipeds - many populations of which have increased while numerous shark populations have declined.'
article_snippet: Blue sharks live for up to 20 years, are known as an open water species, and often migrate long distances.
article_snippet: Blue sharks are preyed upon by  larger sharks like the great white and tiger shark.
highlights_snippet: Blue sharks are about the same size as fur seals but mainly eat smaller fish .
  
highlights_snippet: This is thought to be the most energy dense part of the shark for the seal .