Black abalone  (Haliotis cracherodii)

The exterior of this marine gastropod mollusc's shell varies in colour from dark blue through dark green to black (2). It is smooth with little algal growth, and has five to nine open pores in a line along the left side of the shell. The rear of the shell is spiralled, and the mantle, foot and tentacles are black (3). The interior of the shell is pearly with pink and green iridescence (2).