The Canning River Regional Park is home to many important plants and animals. These include estuarine plants like samphires, soft needled swamp sheoak and salt-tolerant melalecuas.
There are 97 species of birds in the Canning River Regional Park. Commonly spotted waterbirds are cormorants, swamp hens, ibis, pelican, egret, ducks and spoonbills.
Upstream of the weir, the river environment is home to freshwater-dependent flora and fauna, including native fish such as the western pygmy perch and western minnow, reptiles such as the oblong tortoise and crayfish such as gilgies and marron.
Freshwater plants such as flooded gums, river banksia and freshwater melaleucas can also be found here.