While posing for a picture at 90', after just reaching the bottom on this nice wreck we have here locally, The Arrow, an "instructor" and a "divemaster" completed their descent by CRASHING into the bottom directly between photographer and subject. I mean literally CRASHING . . . their descent rate was probably more like 75 ATMOSPHERES per minute and the resulting silt cloud where they struck the bottom would make you think a meteorite had just hit. As they were engulfed by their own silt cloud that had now destroyed our photo op, they gave us the ok signal and crawled off along the bottom.
(Best I could come up with on short notice . . . )