 "P. mirabilis" lives in all habitats, but prefers wet environments, such as wet meadows, lowland moors, salt marshes, dunes, the edge of forests, and wet hedges.It inhabits all strata, from the ground to the top of trees, but are not found under rocks or in caves.These spiders can be found at altitudes up to 1500 m.

The spider develops from a fertilised egg inside a cocoon into an embryo.