Drag the sensor down — watch how hard the liquid pushes on it

surface
Liquid:
Depth (h)
4.0 m
Pressure
39 kPa
pressure = density × g × depth
39 000 Pa = 1000 × 9.8 × 4.0
The sensor is near the surface — only a little liquid is above it, so the pressure is low.

The deeper you go, the more liquid is above you pushing down — so the pressure increases with depth. It pushes equally in every direction.