Out of all the blue whale sightings worldwide, mother-calf pairs make up just 3.1 percent. This doesn’t make sense; though blue whales are far rarer today than they were before the rise of ...

Given pregnancy rates as high as 33-50 per cent for the species, it is a mystery that the rate of sightings of blue whale mother-calf pairs is on average an abysmal 3.1 per cent. Researchers ...

Given pregnancy rates as high as 33-50 per cent for the species, it is a mystery that the rate of sightings of blue whale mother-calf pairs is on average an abysmal 3.1 per cent. Researchers generally ...