Given data
*The given height under the ocean surface is h = 12.3 m
*The given density of ocean water is D = 1025 kg/m^3.
*The value of the acceleration due to the gravity is g = 9.8 m/s^2
The formula for the pressure on a fish 12.3 m under the ocean surface is given as
![p=Dgh](https://img.qammunity.org/2023/formulas/physics/high-school/6tukz05yd5dueyfys71qcmbjrqqwda0h61.png)
Substitute the known values in the above expression as
![\begin{gathered} p=(1025)(9.8)(12.3) \\ =1.23*10^5\text{ Pa} \\ =1.21\text{ atm} \end{gathered}](https://img.qammunity.org/2023/formulas/physics/high-school/ioeo98pnuy9r94abzav8h6qp8sp0fisihj.png)