Species presumed extinct - Bennetts seaweed
Distribution - Bennetts seaweed has only ever been collected from two localities in Port Jackson, Sydney Harbour.
Size - About the size of an out-stretched hand.
Characteristics - A marine red algal species which consists of a flat, finely meshed blade.
Confusing species - Vanvoorstia (Vanvoorstia spectabilis and Vanvoorstia coccinea).