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How can low levels of DDT in farm fields end up at high levels in ospreys? Several different pesticides, an example of which is DDT, can be biomagnified by the food chain. The pesticides are used to...
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Tides flood into the salt marsh twice a day and bring salty water from the sea. Then twice each day the tide ebbs and leaves the salt marsh high and dry. The tides are at their highest (and lowest)...
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The upper surface of the terrapin's shell, called the carapace, is formed of 13 plates, or scutes. Each scute is roughly circular and grooved with rings. Since one ring is formed each year, the age of...
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The tricolored heron is bluish on the back and wing, white on its belly and throat, and reddish-brown on the back of its neck and head. This medium-sized heron is the most common heron of the salt...
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The great egret is a large white wading bird. Unlike the snowy egret, the great egret has a yellow bill and black legs and feet. This bird is the symbol of the National Audubon Society. Their long...
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Boldly patterned in black and white, the stocky American oystercatcher is hard to mistake. It has long red legs and a large red bill. As the name suggests, they feed mainly on oysters, although they...
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Fungi are the only kingdom of life not represented in the plankton. Bacteria have only recently been demonstrated to exist in great abundance as our sampling gear has improved enough to capture these...
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Snowy egrets are smaller versions of the great egret. They have white feathers, black legs with yellow feet, and a black bill. Snowies sometimes wade slowly through shallow water, stirring the mud...
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The mud snail is black, with a very strong shell, and is about 1/2 inch in length. It is an effective scavenger and hundreds of snails will collect around a dead fish or shrimp bait until they...
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The bay anchovy is the most numerous fish in the estuaries of South Carolina. They are food to larger fish and to many birds. Anchovies are specialized to feed on plankton. They have a huge mouth and...