Intertidal zones

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by jennamurawski
Last updated 5 years ago

Discipline:
Science
Subject:
Ecosystems

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Intertidal zones

Intertidal Zones

Spray Zone

The spray zone is also known as the Upper Littoral, Fringe, the Splash Zone, and the Barnecle Belt.

A tiny organism called, meiofauna live in spaces between sand grains and help filter water from land before it reaches the ocean. Another organism that lives there is a periwinkle snail.

Usually this area is dry, but during high tides the area is prayed with salt water, hence why it is called spray zone.

High Tide Zone

The high tide zone is also known as the Upper Mid- littoral Zone or High Intertidal Zone.

This zone gets flooded only during high tide. he abundancy of water is not high enough to sustain large amounts of vegetation, although some do survive in the high tide zone.

The predominant organisms in this zone are barnacles, crabs, green algae, hermit crabs, mussels, sea stars, and snails.

Middle Tide Zone

The middle tide zone is also known as the Lower Mid-littoral Zone.

Low Tide Zone

The low tide zone is also known as the Lower Littoral Zone.

This zone is usually under water, it is only exposed when the tide is unusally low. It also protected from large predators such as large fish because of the wave action and the water still being relatively shallow.

Orangisms found in this zone are not well adapted to long periods of dryness or to extreme temperatures. Examples of these organism are anemones, brown seaweed, crabs, green algae, mussels, sea cucumber, sea lettuce, sea palms, sea stars, sea urchins, shrimp, snails, sponges, surf grass and tube worms.

This zone is covered and uncovered twice a day with salt water from the tides. Wave action is generally more extreme than the high tide and spray zones.

Organisms found in this zone are more complex and larger in size than those found in other zones. Examples of these organisms are barnacles, crabs, green algae, mussels, sea palms, sea stars, snails and sponges.


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