Like one and a half lakh kg!
There must be more. However, the strange thing is that when a mother blue whale gives birth to a baby, her baby weighs 3000 thousand kilograms. And she grows up on mother's milk for one year.
And their growth is so high that every day a baby whale weighs fifty kilograms.
That means a whale was born, weighing 3,000 on the first day,
The next day his weight is 3050, thus increasing rapidly his weight reaches one and a half lakh kilos or more!
Thanks