Photograph of a boulder underside in P. parvivipara habitat with extensive encrustation of oyster shells that includes invasive Pacific oysters (bar = 5 cm).  
  Part of: Liversage K, Byrne M (2018) A note on life-history traits and conservation concerns for viviparous Australian seastars (Parvulastra parvivipara and P. vivipara). Research Ideas and Outcomes 4: e29766. https://doi.org/10.3897/rio.4.e29766