If is saltwater the pressure should be even higher, plus the weight of 40km of ice. 200Km is uncharted territory for earth, with a maximum depth of almost 11 K

If is saltwater the pressure should be even higher, plus the weight of 40km of ice. 200Km is uncharted territory for earth, with a maximum depth of almost 11 Km. But life is able to stand until 800 bars at least. More than this is metabolically defiant in organisms made of cells. Vertebrates can survive 760 bars at least. The majority of the volume on is oceans could be empty and barred to life, but there is still a lot of space for conventional life (and Titanlings could be very different and defy our standards)