rocky and sandy shores
Post on 22-Feb-2016
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Rocky and Sandy Shores
Anne Gillis & Charity Sonier
What are Rocky Shores...?
A rocky shore consists of rocky ledges with pools of salty water, boulders, pebbles and
other non-living things such as air and sunlight. Living in this habitat is a community of hardy
plants and animals; each species is specially adapted for coping with the harsh environment
around it.
Rocky Vs. Sandy
Along the rocky coasts, organisms can attach themselves to the rock; along a sandy
shoreline, there is no way for the organisms to attach themselves to the sand.
Also Sandy shores tend to have very high and very low dunes.
Rocky and Sandy Shore Organisms
• Sea Grass • Hermit Crabs
• 11 Armed Sea Star
• Barnacles • Limpet• Mussels
• Hermit Crabs• They are specially curved and soft in shape and
must take refuge in empty shells for protection • As the crab grows he is forced to move from shell
to shell until he is fully grown.• Barnacles• Barnacles are encrusters, attaching
themselves permanently to a hard surfaces
• suspension feeders; they dwell continually in their shell.
• Limpets– Numerous different kinds of saltwater and
freshwater snails that have a simple shell.• Mussels– Related to the clam family – Lives in either saltwater of freshwater
environments.
Rocky ShoresBarnacles• Splash tide and high
tidesCockabully• MidtideMussels• Clam, phylum MolluscaSponges• Tidal fringe
Sandhoppers• High tide sandy
shoresCockies• Low tide sandy
shores
Sandy Shores
THREATS TO ROCKY SHORES!Rocky shores and the life associated with them
are harmed by pollution, much of which is brought to the coast by rivers.
Sewage in river water can carry cholera which is then taken up by shellfish and, when this is
eaten by people, the latter can become infected.
Many rocky shores are subject to indiscriminate collecting of bait, shells and rock pool life.
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