The following account was recorded in the agent's log during your transmission: Umm, shattered remnants of what looks like an antique diving bell sprawl out across the seafloor, surrounded by a halo of sickly green bioluminescence. The air - or I guess water, technically - is thick with the scent of salt and something faintly metallic, and the silence is almost deafening except for the occasional groan of shifting sediment. Like, the pressure is intense enough that it's warping the bell's metal plates in ways that seem geometrically impossible, folding them in on themselves like origami. The darkness outside the luminescent halo is absolute.