Pressure and Volume are related by Boyle's Law as:

P1 = Initial pressure = 1.25 atm
V1 = Initial volume = 2.50 L
P2 = Pressure at ocean bottom = 95 atm
V2 = Volume at ocean bottom = x = ?
Using the values in the equation, we get
This means, the volume at the bottom of the ocean will be 0.03 L. The volume is decreased due to increased pressure.