DSC_8068 Yellow splash zone lichen (Caloplaca circumlutosa) encrusts rocks and boulders from just above high tide level, and is common on many rocky coasts. Warrington *
DSC_2872 Black 'tar' lichen (Hydropunctaria spp.) forms a thin crust on the upper shore and just into the splash zone and is responsible for the very distinctive horizontal black band that can be seen on many shores. Aquarium Point, Otago Harbour *
DSC_2432 Black 'tar' lichen (Hydropunctaria spp.) detail. Forms a thin crust on the upper shore and just into the splash zone and is responsible for the very distinctive horizontal black band that can be seen on many shores. Aquarium Point, Otago Harbour *
