Seven armed sea star, Luicia australiae.
- Anthony Tonks
- © Anthony Tonks
- Pittwater, NSW
This is a common seven armed seastar. Often the outline of this large sea star can be seen buried in sand.
Sea stars often regrow arms bitten off by predators and, if disturbed, brittle stars drop off an arm or part of an arm. This allows them to escape predators as the cast-off arm continues to wriggle to distract the attention of the attacker.
Find out more about sea stars and their relatives on the Animals page of the Australian Museum Website.