article_snippet.sent: On four separate occasions, Killer seals have been spied feasting on harbour porpoises that Killer seals have killed.
article_snippet.sent: The footage (pictured) backs up a recent study that grey seals  have a penchant for young porpoises with a thick layer of energy-packed fat.
article_snippet.sent: Ferocious: Scientists said killer seals may have developed a taste for porpoises after sampling some caught in fishing nets (stock image shown) and warned that people could be next .
article_snippet.sent: However, Grey seals have recently been blamed for attacks on porpoises on the continent.
article_snippet.sent: Recent Dutch research concluded that hundreds of the dead porpoises bore the tell-tale marks of a seal attack.
article_snippet.sent: Recent Dutch research said that killer seals seemed to have a particular penchant for young porpoises with a thick layer of energy-packed fat.
article_snippet.sent: The Utrecht University researchers said killer seals may have developed a taste for porpoises after sampling some caught in fishing nets.
article_snippet.sent: Dr Stringell, who has done his own research for Natural Resources Wales, said that despite reports of seals eating porpoises off the coast of Belgium, France and the Netherlands, his was surprised to discover it happening here.
article_snippet.sent: Alternatively, the attacks may be an example of ‘opportunistic hunting’ – with porpoises too close for hungry seals to ignore.
highlights_snippet.sent: On four occasions, grey seals were spied eating porpoises grey seals had killed .
  