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The Intertidal Zone

Life Science - Middle School

 
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The Intertidal Zone The intertidal zone ecosytem is generally broken down into four areas. The Spray Zone (or Supratidal Zone) is above the tide zone. This zone is high up on the beach above where even the high tide reaches. It does get sprayed by big waves and flooded during storms and unusually high tides. Not much wildlife or plant life survives here. It is like a desert. You can sometimes find some small barnacles and marine lichen. The High Tide Zone (or Upper Mid-littoral Zone) is underwater only when the tide is high. It is a very salty area. Small pools are left behind when the tide goes out, and they evaporate leaving the salt to collect. You can find sea anemones, crabs, starfish, snails, limpets, barnacles and mussels. The Middle Tide Zone (or Lower Mid-littoral Zone) spends half its time under water and half its time in the open air. This zone gets the fiercest wave action. This is where you start to see seaweed. Wildlife in the middle tide zone includes: sea anemones, crabs, starfish, snails, impets, barnacles, mussels, sponges, shrimp, chitons, sea urchins and green algae. The Low Tide Zone (or Lower Littoral Zone) is mostly underwater. It gets dry only for a short time during low tide. Wildlife is plentiful in this zone. You can find lots of seaweeds and kelps (1), sea anemones (2), hermit crabs (3), green crabs (4) and other crabs, starfish (5), periwinkle snails (6), limpets (7), barnacles (8), razor clams (9) and other clams , mussels (10), sponges, shrimp (11), chitons (12), sea urchins (13), abalone, small octopuses (14), sea slugs, sea cucumbers and green algae. There are also many fish like the porgy (15), bay blenny (16), and grunion (17). Spray Zone High Tide Zone Middle Tide Zone Low Tide Zone 4 1 3 5 8 9 6 7 10 11 13 12 16 15 14 2 17 Amsel
94-4062 The intertidal zone ecosytem is generally broken down into four areas. The _______________________ Zone (or Supratidal Zone) is above the tide zone. This zone is high up on the beach above where even the high tide reaches. It does get sprayed by big waves and flooded during storms and unusually high tides. Not much wildlife or plant life survives here. It is like a _______________________. You can sometimes find some small barnacles and marine lichen. The _______________________ _______________________ Zone (or Upper Mid-littoral Zone) is underwater only when the tide is high. It is a very salty area. Small pools are left behind when the tide goes out, and they evaporate leaving the salt to collect. You can find sea anemones, crabs, starfish, snails, limpets, barnacles and mussels. The _______________________ ______________________ Zone (or Lower Mid-littoral Zone) spends half its time under water and half its time in the open air. This zone gets the fiercest _______________________ action. This is where you start to see seaweed. Wildlife in the middle tide zone includes: sea anemones, crabs, starfish, snails, impets, barnacles, mussels, sponges, shrimp, chitons, sea urchins and green algae. The __________________ __________________ Zone (or Lower Littoral Zone) is mostly underwater. It gets dry only for a short time during low tide. Wildlife is plentiful in this zone. You can find lots of seaweeds and kelps (1), sea anemones (2), hermit crabs (3), green crabs (4) and other crabs, starfish (5), periwinkle snails (6), limpets (7), barnacles (8), razor clams (9) and other clams, mussels (10), sponges, shrimp (11), chitons (12), sea urchins (13), abalone, small octopuses (14), sea slugs, sea cucumbers and green algae. There are also many fish like the porgy (15), bay blenny (16), and grunion (17). Spray Zone High Tide Zone Middle Tide Zone Low Tide Zone 4 1 3 5 8 9 6 7 10 11 13 12 15 14 2 17 Amsel 16 The Intertidal Zone
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