It sometimes attaches pieces of shell and other debris to its stalk, a strategy that is thought to reduce erosion.

[3] It is best known for its vibrant colours and its central disc area can be green, pink, blue, or brown.

[1] Its tentacles are usually a different colour to the central disc and can be blue, mauve, orange or white.

These have perforated tips that resemble warts and eject fine streams of water when the animal is stimulated.

Once caught, they will suck prey into their central cavity to be broken down by digestive enzymes.