Rakali

Their scientific name is Hydromys chrysogaster, which translated from Latin means ‘water mouse with golden belly’. 

Found throughout Australia, in both coastal and freshwater habitats, Rakali have specialised adaptations such as webbed feet and waterproof fur to enable them to effectively hunt for their prey in an aquatic environment.

Rakali are especially adapted for aquatic life. They have broad, partially webbed hind feet and dense waterproof fur.Their tail is often as long as the body and is thick and well covered by dark hair, usually with a prominent white tip.  Rakali tails act like rudders when they are swimming or diving for food. 

Colour varies between individual animals but most Rakali seen in Bayside have beautiful dark chocolate brown coats with golden underbellies. Their head and body is somewhat tapered towards the tail with small ears and eyes and nostrils set high on the head. Their total body length, including the tail is approximately 60cm long.  Male Rakali weigh an average of 755 grams; females around 606 grams.

Rakali can often be seen foraging in full daylight, although most activity occurs around sunset.  They swim through the water like small otters, with only their head and nostrils above water, leaving a wake behind them and occasionally diving for prey with a flick of their tail. Breeding occurs throughout the year but most litters are born in spring and late summer. Gestation is about 34 days and up to five litters (although more commonly 1-2 litters), consisting of 3-4 young, may be born annually.

Rakali are a protected native species in Victoria. In Bayside, Rakali are recognised as a locally significant species.

Video footage of the Rakali trial is available below:

• Rakali clip #1 - 5.83 MB
• Rakali clip #2 - 6.64 MB
• Rakali clip #3 - 4.19 MB

The Rakali is generally poorly known to members of the general public and the continued raising of awareness of the species within Bayside will aid it its local conservation. 

Council’s continuing work with Rakali ensures Bayside is taking the lead in conserving and protecting this unique species, by taking actions to encourage the Rakali population within Bayside and promote awareness within the Bayside community. 

Further information regarding Rakali is available from Council's Environment Research Officer on 9599 4444.

(Photographs courtesy of Dirk Petzold and Andrew McCutcheon)

For further information, visit the rakali.com website which is dedicated to improving knowledge and assisting in the protection of Rakali.