Figure 1.

Protocols for compression and/or decompression in Experiment ^#1 (dotted lines) and ^#2 (solid lines). In Experiment ^#1, control lumpfish (grey lines) were held at 0 bar and the pressure-exposed fish (black lines) were compressed to 80 bar in a stepwise protocol and then decompressed to 0 bar using the same protocol (110 total minutes; diamond represents end of experiment). In Experiment ^#2, control fish were held at 0 bar and pressure-exposed fish were compressed to 80 bar using the stepwise protocol and held at pressure. After 1 hour, control and pressure-exposed fish were exposed to either: (a) decreasing temperature, (b) increasing temperature or (c) decreasing oxygen (340–350 total minutes; circle represents end of experiment).