Growing subtidally on rocks lying on sandy bottom. When fresh fronds yellow-green, blades without midribs, vesicles uncommon, large, round (not sharp-ended) usually with a prominent flattened blade at apex.
Note: patterning on vesicles caused by pressing rather than natural.
A puzzle to me. I have collected the same entity once before, growing subtidally on serpentinite below the Surville Cliffs. That specimen I had thought was Cystophora platylobium. However, it was identified as 'Possibly Cystophora' by Dr Wendy Nelson (specimen in AK). This posting is of the same seaweed.
I had thought the Otaipango plants were Carpophyllum angustifolium but they don't fit that species. At Otaipango it grows with Carpophyllum maschalocarpum and C. plumosum - I saw no Cystophora in my snorkels there.
For now I am posting it as a Carpophyllum.
Same specimen as http://naturewatch.org.nz/observations/4922056.
Voucher will be lodged in AK.
Eastern Pomfreds (Schuettea scalaripinnis) and Common Kelp (Ecklonia radiata) in sunlit water
Rob and Common Kelp (Ecklonia radiata)
Forkweed (Dictyotaceae) growing on a swimming net
The Phaeophyceae or brown algae (singular: alga), is a large group of mostly marine multicellular algae, including many seaweeds of colder Northern Hemisphere waters. They play an important role in marine environments, both as food and for the habitats they form. For instance Macrocystis, a kelp of the order Laminariales, may reach 60 m in length, and forms prominent underwater forests. Another example is Sargassum, which creates unique habitats in the tropical waters of the Sargasso Sea....