What is a coast and its importance - Iczmpwb.org
What is a coast and its importance - Iczmpwb.org
What is a coast and its importance - Iczmpwb.org
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Rocky Shore<br />
• Intertidal area of sea<strong>coast</strong> where<br />
solid rocks predominates.<br />
• Biologically rich environment.<br />
Zonation<br />
• Supra-littoral fringe, Mid-littoral<br />
Zone, Infra-littoral fringe (Sublittoral<br />
zone)<br />
Factors affecting animals<br />
• Wave action – sessile, filter<br />
feeding (barnacles, mussel, oyster<br />
etc.)<br />
• Desiccation & Water loss –<br />
Operculum (gastropods) <strong>and</strong><br />
valves (oysters <strong>and</strong> mussels)<br />
• Temperature <strong>and</strong> Salinity – Hard<br />
Shells to tolerate heat (molluscs),<br />
hide in crevices of rock (crab,<br />
sponges)
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