1. ALGAE Division CHLOROPHYTA Division HETEROKONTOPHYTA
Division RHODOPHYTA

2. DIVISION CHLOROPHYTA CLASS CHLOROPHYCEAE
All shades of green
Chlorophyll A + B
They are often tolerant of difficult conditions:
Pollution
Reduced salinity
Commonly we can find:
- In upper half of intertidal regions
In brakish water
On beaches subjest to freshwater run-off
Growing on pier piles
In splash-zone rock pools

3. DIVISION HETEROKONTOPHYTA CLASS PHAEOPHYCEAE
Brown algae
Chlorophyll + fucoxanthin
All are multicellular
They are several species on rocky shores
In shallow sublittoral situation; few species can tolerate reduced salinities or higher temperatures.

4. DIVISION RHODOPHYTA CLASS RHODOPHYCEAE
Red algae
Chlorophyll + phycoeritrin + phycocyanin
(red pigment) (blue pigment)
The colour of different species is very variable
They are the most tolerant of reduced light conditions; They can survive in deeper water than other types of plant
Many red seaweeds are intolerant of drying out or reduced salinities.
Appear in permanent rock pools.
Very damp areas under larger plants
Sublittoral situations

5. LOWER INTERTIDAL ZONE DIVISION HETEROKONTOPHYTA CLASS PHAEOPHYCEAE
Bifurcaria bifurcata
Cystoseira tamariscifolia
Sargassum muticum
Colpomenia peregrina

6. LOWER INTERTIDAL ZONE DIVISION RHODOPHYTA CLASS RHODOPHYCEAE
Plocamium cartilagineum
Asparagopsis armata
Halopithys incurva
Gelidium sesquipedale
Chondrus crispus
Jania rubens
Corallina officinalis
Lithophyllum incrustans
Gelidium attenuatum

7. LOWER INTERTIDAL ZONE DIVISION CHLOROPHYTA CLASS CODIACEAE
Codium adhaerens
CLASS ULVACEAE
Ulva rigida

8. MID INTERTIDAL ZONE DIVISION HETEROKONTOPHYTA CLASS PHAEOPHYCEAE
Ralfsia verrucosa

9. MID INTERTIDAL ZONE DIVISION RHODOPHYTA CLASS RHODOPHYCEAE
Hildebrandia prototypus

10. Middle Intertidal Zone
DIVISION CHLOROPHYTA
CLASS CHLOROPHYCEAE
Enteromorpha intestinalis

11. Upper Intertidal Zone Blidingia minima (green)
Pelvetia canaliculata (brown)
Porphyra linearis (red)

12. Lichens MID INTERTIDAL ZONE Lichina pygmaea SUPRATIDAL ZONE
Verrucaria maura