Coomera Island has long been home to several of the furry creatures and during dry spells the ‘roos have to make the 150m swim from the island to the main land to find fresh water to drink.

Although the waterway already has a 6-knot speed limit, the signs are a reminder to those using the area to be careful when travelling through.

GCWA CEO Hal Morris said that the safe enjoyment of waterways for everyone is important, including animals.

“Of course the issue of being safe on the water is very important and in this case that goes a bit beyond the norm, we are taking both the kangaroos and the boaties safety into account,” said Mr Morris.