I'm reading and enjoying Peter Watts' Starfish (1999), thanks to Steven Kaye's recommendation. So far the plot concerns an attempt to build a power station upon seabottom crevice, and the perilous mental states of workers. Brooding, intense, sneaky stuff.
Some fine writing so far:
Ballard makes a strangled sound and dives into the mud. The benthic ooze boils up around her in a seething cloud; she disappears in a torrent of planktonic corpses.