PC_210078 Brown seaweed (Desmarestia ligulata) underwater in tidal shallows. Large (to 1m), plants with a flattened main axis and pinnately arranged side branches lying on one plane. Plants release acid when cast ashore which speeds up their decay, and the plants also turn green as they break down. Smaills Beach, Otago Peninsula *
DSC_6519 Brown seaweed (Desmarestia ligulata) detail of frond. Large (to 1m), plants with a flattened main axis and pinnately arranged side branches lying on one plane. Plants release acid when cast ashore which speeds up their decay, and the plants also turn green as they break down. All Day Bay, Kakanui
DSC_6053 Red seaweed (Pyrophyllon subtumens) is only found growing on the surface of Bull kelp (Durvillaea spp). This small red seaweed attaches by a holdfast of rhizoidal cells that penetrate the host. Found in extreme low intertidal and upper subtidal zones from the southern North Island down into the subantarctic. Brighton Beach
