Blue whales are the largest animals to have ever lived. The largest of these giants was a true behemoth, equaling the ...

But across various blue whale populations, high pregnancy rates of 33–50% annually seem to contradict the average 3.1% rate of sightings of blue whales involving mother-calf pairs.

Blue whales might be some of the most iconic creatures on the planet, but for all their impressive features, there’s still plenty we don’t know about them. One particularly confounding mystery ...

But across various blue whale populations, high pregnancy rates of 33-50% annually seem to contradict the average 3.1% rate of sightings of blue whales involving mother-calf pairs.