Xenostrobus neozelanicus
Hauea
Hauea
Mussel, Flea
Mussel, Little Black
Invertebrate
Mollusca
Bivalvia
Mytilidae
It has a shiny black shell externally and can be confused with juvenile Blue Mussels.
It is most visible in the mid tide where it can form dense mats on semi protected to high energy rocky shores.
Filter feeder.
NZ Coastal Marine Invertebrates; Vol 1