Penetration diving and victim recovery is extremely hazardous. I am quite surprised they didn't attempt to raise the wreck and work on the surface. Glad they got them all out, for all that.
https://www.theguardian.com/world/article/2024/aug/23/mike-lynch-yacht-possibility-of-manslaughter-charges-as-final-body-retrieved-sicily

This is a saturation dive team exploring MS Estonia back in Winter 1994. Nothing graphic is shown (despite ~750 victims trapped in the hull) but it gives s great idea of the very difficult working conditions such teams face.
https://youtu.be/ACpsOTfEplg

In this case they surveyed and recorded every victim location for the coroner, and for what was assumed would be a recovery effort, but it never happened. They just left them in there. The dive team were quite confident they could do it.

@sullybiker Wasn’t there something weird about that wreck / the bodies being left? Something about some of the cargo being removed?

@Flick There's lots of conspiracies. Supposedly it was carrying something illicit.

@Flick I think it was bureaucratic imcompetence leading to the usual information vacuum. The official report has not been meaningfully contested.

@Flick They even went back last year and raised the ramp - a key part of the evidence - and it was pretty much as the report hypothesized.