Here are some of the photos he captured.
String kelp (Macrocystis pyrifera) fronds grow from the apex or tip, continually splitting off new leaves as they elongate.
Undaria pinnatifida, or wakame as it is known in Japan, can be readily identified by the convoluted sporophyll at the base of the adult plant. Wakame is an introduced seaweed first identified at Orford in Tasmania in 1988.
String kelp (Macrocystis pyrifera) mostly grows in southern Tasmania on rocky reefs exposed to moderate swell wave action in depths of five to 20 meters.
Green alga (Caulerpa longifolia) occurs on rocky reefs in more sheltered waters often in association with fine sediments on rocky reefs. The alga has a rhizome, a root-like attachment, which attaches in soft substrates.
Bull kelp (Durvillaea potatorum) can be found on rocky reefs on wave-exposed shores from South Australia to southern New South Wales. It inhabits the intertidal zone to depths of greater than 10 meters in very high wave exposed areas such as on Tasmania's west coast. Alginates extracted bull kelp are used as an additive in many products, including ice-cream and
At night time, the swimming anemone (Phlyctenactis tuberculosa) moves high on palm weed (Ecklonia radiata) fronds to catch prey floating past its tentacles. During the day the anemone looks like a bag of beans.
String kelp (Macrocystis pyrifera) vesicles and blades.
Cray weed (Phyllospora comosa) is found on rocky coastal reefs from Western Australia to New South Wales along Australia's southern coastline. The fronds of Phyllospora also have vesicles or floats. These float the fronds into the water column, sometimes to the surface, where they can be seen at low tide.