There is a world somewhere between reality and fiction. Although ignored by many, it is very real and so are those living in it. This forum is about the natural world. Here, wild animals will be heard and respected. The forum offers a glimpse into an unknown world as well as a room with a view on the present and the future. Anyone able to speak on behalf of those living in the emerald forest and the deep blue sea is invited to join.
So I did some research. It turns out their may be a lot more weight data than we thought. According to Mikhalev, weights were recorded for about 95 specimens were taken by Soviet whalers. He provides a regression based off this data, but leaves no appendix. All we have is his max and min values. The max includes a data point for a 8.6m male that weighed 9.9 tonnes. He cites a few studies from Sleptstov for part of the dataset, but I couldn't find anything. I am gonna keep looking and here's the regression Mikhalev left.