I said it once, and waited for them to express interest. Now you have. Here are some of the papers from which the reporting is drawn:

starting point for abyssal biomass calcs - https://www.frontiersin.org/articles/10.3389/fmars.2021.6710...

more on abyssal biomass- https://www.nature.com/articles/srep30492

plant biomass per hectare in Sulawesi - https://www.sciencedirect.com/science/article/abs/pii/S03781...

nickel assessment in nori-d for per hectare numbers https://www.sec.gov/Archives/edgar/data/1798562/000121390021...

I spoke to Kris van Nijen, Gerard Barron, Nathan Eastwood, Adrian Glover, François Mosnier, Pia Heidak, Peter Tom Jones, Mervyn Stevens, Alex Laugharne