At a depth of 100 meters, conditions are significantly different than above the water's surface. The pressure is eleven times higher, and accessibility for humans is extremely poor. In seawater, there's an additional risk of corrosion. Nevertheless, the UW100 series of underwater actuators from Concens is capable of operating at these great depths. They are often used for making angle adjustments in…
Source: https://rotero.com/nl/blog/diepe-wateren-vragen-sterke-actuatoren/