It is estimated that as many as 80 per cent of marine species found in southern Australian waters occur nowhere else Biodiversity Australia is one of the most biologically diverse countries on the planet.
It is home to more than one million species of plants and animals, many of which are found nowhere else in the world, and less than half have been described scientifically. About 85 per cent of flowering plants, 84 per cent of mammals, more than 45 per cent of birds, and 89 per cent of inshore, freshwater fish are unique to Australia.
Australia is richly endowed with marsupials - there are more than species.
At least 18 exotic mammals have established feral populations in Australia, with cats and foxes responsible for the decline and extinction of several native animals.
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