DSC_4745 Horse mussel, or hururoa (Atrina zelandica) empty shells among drift. This is NZ's largest bivalve. The lines of hollow spines radiating out towards the posterior end of the shell help anchor it in mud or sand. Spring low intertidal to subtidal, where it lives buried for most of its length. Victory Beach, Otago Peninsula *
DSC_4749 Horse mussel, or hururoa (Atrina zelandica) empty shells among drift. This is NZ's largest bivalve. The lines of hollow spines radiating out towards the posterior end of the shell help anchor it in mud or sand. Spring low intertidal to subtidal, where it lives buried for most of its length. Victory Beach, Otago Peninsula
DSC_6896 Northern rock oysters, or tio repe (Saccostrea glomerata) shells solid and variable in shape, particularly when growing in dense beds such as here, on rock in the mid-intertidal zone. Pakiri Beach *
