It slivered off a ship from Rio which had docked in Sydney and has now made itself home in Australia.
Brazilian Cock Snail!
Seeks a warm slippery place to live in.
Don't touch it! When over stimulated it grows bigger and spits out a vile white jam poison.
Only means to control it at moment consist of tying it up in rubber balloons.
Or cut it out of its shell with razors.
If you spot one report it to your nearest Wildlife Officer.