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Animals
Crab, Cunjevoi,
Dog Whelk, Mussel, Onchidellid, Periwinkle
Links to specific
pages of Life on Australia's Seashores are provided below
each image for further information on most species.
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Crab
Phylum:
Arthropoda / Crustacea
Class:
Malacostraca
Species:
Cyclograpsus spp., Paragrapsus spp.
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Cunjevoi
Phylum:
Chordata
Sub-Phylum:
Urochordata
Class:
:Ascidiacea
Species:
Pyura stolonifera
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| Shore
Crabs are sometimes encountered on in pools or under rocks in
the intertidal area. They are scavengers feeding on debris.
Sometimes moults of crabs are found in rockpools. |
After
spending their larval stage as a free swimming tadpole like
larvae, with a distinctive nerve chord, adult animals are filter
feeders that live permanently attached to the lower section
of rocky shores. |
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Dog Whelk
Phylum:
Mollusca
Class:
Gastropoda
Species:
Plaxiphora albida
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Mussel
Phylum:
Mollusca
Class:
Gastropoda
Species:
Xenostrobus pulex
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more
on whelks
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| This
large carnivorous snail feeds on smaller molluscs, barnacles,
worms and ascidians which it eats by drilling a hole into their
bodies. This snail has a typical groove through which a sensory
siphon can be extended. |
These
small mussels form dense mats on the rocky shore and attach
themselves with strong threads. They are filter feeders and
in turn are prey items for a number of crabs, fish, and carnivorous
snails. |
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Onchidellid
Phylum:
Mollusca
Class:
Gastropoda
Species:
Onchidella patelloides
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Periwinkle
Phylum:
Mollusca
Class:
Gastropoda
Species:
Nodolittorina unifasciata
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| A
slug like air breathing animal that looks like a limpet but
with a leathery mantle covering the back. They emerge from rock
crevices at night and on cloudy days to feed. |
Small
grazing snail feeding on micro-algae and lichens. Occurs in
large numbers on upper shoreline. |
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