> the largest congregation of deep-sea octopuses ever discovered on Earth, where over 6,000 octopuses huddle around an extinct underwater volcano in the black, cold ocean depths, almost two miles below the surface.

I'm 99% sure the number 6000 is an estimation, and in that case, how would you start to estimate such number? Divide the area into a grid of N cells, count all of them in one cell and then apply to the entire area? Seems they would be many clusters so the number would be very unreliable.