Tutorial/Fantastical Floating Ball...

A mysterious sphere-shaped device that seems to be capable of detecting water pressure at certain depths based on variables of weight. It will activate when affected by high-pressure water currents or other similar factors.
The ringed device will activate upon contact with the sphere due to mysterious reasons.

A mysterious sphere-shaped device that seems to be capable of detecting water pressure at certain depths based on variables of weight. It will activate when affected by high-pressure water currents or other similar factors.
The ringed device will activate upon contact with the sphere due to mysterious reasons.