APHOTOMARINE

An educational resource dedicated mainly to the photography
and diversity of marine life that can be found in coastal waters
and intertidal areas of Great Britain and Ireland by David Fenwick.

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Brodie's Siphon Weed
Polysiphonia brodiei
- branch 1

Brodie's Siphon Weed
Polysiphonia brodiei
- with 0.1mm division rule 1

Brodie's Siphon Weed
Polysiphonia brodiei
- cystocarps 1

Brodie's Siphon Weed
Polysiphonia brodiei
- cystocarps 2

Brodie's Siphon Weed
Polysiphonia brodiei
- cystocarp 1

Brodie's Siphon Weed
Polysiphonia brodiei
- stem exterior 1

Brodie's Siphon Weed
Polysiphonia brodiei
- stem section 1

Brodie's Siphon Weed
Polysiphonia brodiei
- on octopus pot 1

Brodie's Siphon Weed
Polysiphonia brodiei
- on octopus pot 2

The species here was found covering an octopus pot that had washed ashore at Perran Sands, Cornwall. 13.11.16.

Here I must thank Tracey Williams fpr passing the pot to me to look at, and Francis StPierre Bunker for identifying the species of Polysiphonia.

Sections of stem are often used to identify Polysiphonia species, here's how I prepared sections for the image seen above.

With a new scalpel blade I cut about eight slices of stem as thinly as I could using a stereozoom microscope. This was done on a dry microscope slide, the sections were then spaced equally apart. A couple drops of glycerine were placed over the sections and a microscope coverslip was placed on top. The sections were then examined and photographed using a compound microscope. One particularly good example was found among the eight sections.

AlgaeBase is a database of information on algae that includes terrestrial, marine and freshwater organisms.

The main objective of this website is in furthering environmental awareness and education through the medium of photography. To increase awareness and access to the wildlife of the region and help

people find and identify it. Sometimes the difference between species is obvious but many species can only be determined by observing microscopic characteristics that are specific to any one species.