The area has been identified as an Important Bird Area because it supports a small numbers of the endangered Australasian bittern.

The shallow wetlands are permanent or near-permanent, as they cycle through seasonal changes in salinity from freshwater in the winter and spring to brackish in summer and autumn. The site is largely contained by the Owingup Nature Reserve and has a Mediterranean climate with wet winters and dry summers.
There are over fifty species of plants, forty plus species of macroinvertebrates, and at least eight species of fish recorded. The swamp supports a couple of the largest nationally threatened Flora species. And the swamp system is also a nursery area for freshwater and estuarine fishes.
With the bitterns, some 40 + species of waterbirds have been recorded at the swamp and the surrounding wetlands.
A Little Bit Of Safety Advise
when placed it was the season for our friend Joe Blake if you happen to come across him just keep away and he will ignore you.
Congratulations
6unicorns
First To Find
information referenced from Wikipedia