There are seven species of River Dolphin. With some more information, We might be able to help with your answer.
big
About 350 pounds.
450 pounds
the indus river
The Indus River carries a significant amount of silt due to the erosion of the Himalayas and its tributaries. Studies estimate that around 400 million tons of silt are transported annually by the Indus River.
It depends on the dolphin breed. Sorry I couldn't be very specific.
they weigh about 30 -90 lbs at birth
A baby dolphin weigh about 300 pounds
5 tons
19 tonne.
It depends on what type of dolphin.