Purple Tube Worm
You can spot these beautiful little Tube Worms all over Sydney. They're like little purple flowers scattered over the ocean floor - strange little blooms that disappear back down their stalks as soon as you see them, making you wonder if they were ever there in the first place.
These are thought to be an introduced species from the Northern Hemisphere that hitched a hike on the bottom of a ship. Maybe it's because they are from the less fortunate half of the world that they're happy to pop up in even the most murky waters of Sydney. They clearly love this city.