Spiny Brittle Star
Size: Center disc to 1.8cm, arms 5-8 times the size of the disc
Range: British Columbia to Southern California
Notes: The brittle star can regenerate new arms when severed. The Spiny Brittle Star requires an oxygen-rich environment, so it is used as an “indicator species” – if the population of stars drops, it is a sign that their habitat is polluted and unhealthy.