Identify the type of WSN using the following description:

Consist of several sensor nodes that are hidden in the ground to monitor underground conditions.

Autonomous underwater vehicles are used for gathering data from the sensor nodes.

Track and monitor events in the form of image/video.

Collection of sensor nodes that can be moved on their own and can be interacted with the physical environment.

The sensor nodes are randomly distributed within the target area that is dropped from a fixed plane.