Are blue whales extinct?
they haven’t extinct they are endangered Due to their enormous size, power and speed, adult Blue Whales have virtually no natural predators. There is however one documented case in National Geographic Magazine of a Blue Whale being attacked by Orcas, although the Orcas were unable to kill the animal outright during their attack, the Blue Whale sustained massive wounds and probably died as a cause of them shortly after the attack.[citation needed] Blue Whales may be wounded, sometimes fatally, after colliding with ocean vessels as well as becoming trapped or entangled in fishing gear.The ever-increasing amount of ocean noise drowns out the vocalizations produced by whales, which may make it harder for whales to communicate. Human threats to the potential recovery of Blue Whale populations also include accumulation of polychlorinated biphenyl (PCB) chemicals within the whale’s body. With global warming causing glaciers and permafrost to rapidly melt and allowing a large amount of fresh w
