What is killing killer whales?

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Bombe à retardement pour la santé des orques

Un orque nage le 01 juillet 2007 dans les mers Australes au large de l’archipel des Crozet. © AFP PHOTO MARCEL MOCHET

Killer whales, the ocean’s fiercest predators, are easily recognisable by their black and white markings.

But their future seems less clearly defined.

Marine experts are concerned about an invisible threat to the animals that has been building in our seas since World War II.

That was when industries began extensively using chemical flame retardants, such as PCBs.

BBC

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