What is causing blue whales to be extinct?

Answer 1

Blue Whale populations have declined significantly due to extensive and uncontrolled hunting. Blue whale hunting was banned in 1966 by the International Whaling Commission. But, by 1970 330,000 blue whales had been caught & killed in the Antarctic, 33,000 in the rest of the Southern Hemisphere, 8,200 in the North Pacific, and 7,000 in the North Atlantic. The largest original population, in the Antarctic, had been reduced to 0.15% its original count.

Now that the hunting of these giant animals is banned, their numbers has started to increase and I don't think they will go extinct.

Answer 2

extensive and uncontrolled hunting. Blue whale hunting was banned in 1966 by the International Whaling Commission. But, by 1970 330,000 blue whales had been caught & killed in the Antarctic, 33,000 in the rest of the Southern Hemisphere, 8,200 in the North Pacific, and 7,000 in the North Atlantic. The largest original population, in the Antarctic, had been reduced to 0.15% its original count.

Answer 3

The Blue Whale isn't extinct, although it is listed an endangered. There are believed to be less than 5000 blue whales. Their numbers were greatly reduced by hunting.

Answer 4

the illegal hunting going on is a major threat for them.

also global warming is harming them.