You can get this right at the start of the game.
Using a Keyboard/Mouse:
Holding Right click and pressing W to aim down will dive all the way to the bottom.
Then press S and head to the surface (still holding right mouse click) & also using the left mouse click now and then to give your self a boost and you should leap from the water.
Xbox Controller: Easiest method
to dive and
to swim down towards the sea floor. Once at the sea floor start swimming upwards using
to leap out of the water.
If it doesn't work the first time just keep at it and eventually you should be able to get it to leap a bit out of the water.
It is possible to do on a laptop. you just need to get to the bottom of the water and aim towards the surface with S. You can briefly let go of the right mouse button and press the left mouse button which should give you a bit of a boost. Then immediately after repress the right mouse button.