Astrobrachion constrictum (Farquhar, 1900)
Common in the Solitary Islands Marine Park. Known from Australia and New Zealand and south west Pacific Ocean.
Found entwined in the branches of the host black coral trees to a depth of at least 200m.
Totally dependent on the mucus produced by the polyps of the black coral tree for its food supply, the Snake Star moves only during the hours of darkness.