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Visit the South Carolina Department of Education for Science standards.

Take a quick look at all Science series on Knowitall.org

 

Spot & Croaker | The Salt Marsh
Spot & Croaker | The Salt Marsh

Photo

Spot and croaker are closely related fish. They look alike, with light vertical bands, but the spot is named for a dark spot just behind its gill cover. All members of this group of fish make noises...
Shrimp | The Salt Marsh
Shrimp | The Salt Marsh

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Three different species of shrimp are collected commercially from offshore and from the salt marsh. They are the pink shrimp, the brown shrimp, and the white shrimp. They are large, up to 10 inches in...
Blue Crabs | The Salt Marsh
Blue Crabs | The Salt Marsh

Photo

Blue crabs are active predators and effective scavengers. They occur throughout the estuary. They can swim by using their last pair of legs, which have been modified into paddles instead of walking...
Periwinkle | The Salt Marsh
Periwinkle | The Salt Marsh

Photo

At low tide, the periwinkles crawl down to the base of the stem, where algae grow best, and graze the algae off the stems. When the tide rises, however, the periwinkles crawl up the stems. Why don't...
Marsh Wren | The Salt Marsh
Marsh Wren | The Salt Marsh

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The wrens build their nests in the tips of living Spartina. The nests are made out of dead Spartina. They are not open, but are covered, so the nest looks like a ball of dead grass. There is a hole on...
Male Fiddler Behavior | The Salt Marsh

Video

Male fiddler crabs have one large claw, which can be either their left or right. They wave these large claws at other males to frighten them away from their territory. When they wave the claw, they...
Great Blue Herons | The Salt Marsh
Great Blue Herons | The Salt Marsh

Photo

Great blue herons are the largest of our herons. Standing over 3 feet tall, with a large, 6-inch-long dagger of a beak, they eat anything they can spear. They are bluish-gray in color. They most often...
Raccoon | The Salt Marsh

Video

It ís a raccoon! Raccoons often feed near water and frequently visit the salt marsh during low tide. Raccoons are omnivorous and eat many different plants and animals. In the salt marsh, they often...
Alligators | The Salt Marsh
Alligators | The Salt Marsh

Photo

Alligators are not normally found in brackish or salt water, although they do occasionally swim there. They much prefer freshwater and must return to it to drink. They can reach 19 feet in length, but...
Salt Grass | The Salt Marsh
Salt Grass | The Salt Marsh

Photo

Salt grass sends underground stems called rhizomes into the salt flat. Sprouts from these rhizomes make stems and leaves above ground. You can see where the rhizome lies underground because the stems...