Crabs

Crabs have fatter, broader bodies than do lobsters, crayfish, and shrimp. Their front legs have large pinching claws. In crabs that swim, the last pair of legs are broad and flattened, serving as paddles. Crabs' eyes are mounted on movable stalks. Crabs that live in water breathe by means of gills. Land crabs have modified gills that function as lungs. Some crabs feed on vegetable matter. Others eat small living animals. Most crabs, however, are scavengers, eating dead or decaying material.

Many different kinds of crabs live throughout the world. Most crabs live in the sea, on or near the bottom. Some crabs live on land, sometimes several miles from water. To lay their eggs, the females must return to the water. Ghost crabs stay on the ocean shore above the high-water line. Fiddler crabs are common along the Atlantic coast in areas of salt and brackish water. The male fiddler has an enlarged right claw that it waves back and forth as a signal to available females and to competing males. Fiddlers live in burrows in the sand or mud, where they stay during winter and high tides.

Most hermit crabs have long, soft abdomens that are spirally coiled. They occupy abandoned snail shells by thrusting the abdomen into the shell and holding onto it. They do not kill the original owner of the shell, though. They will fight other hermit crabs to determine occupancy of a shell. The hermit crab drags the shell behind as it walks about. When the crab grows larger, it seeks a larger shell.

A common crab along the Atlantic and Gulf coasts of the United States is the blue crab. Blue crabs are swimming crabs that live in marine waters but also enter shallow brackish areas.

Crabs are an important food source. Some are canned and others are sold fresh to restaurants. In the United States, three main kinds of crabs are caught for their meat. Blue crabs are caught commercially in open water by trawls or are removed from the mud with dredges. Dungeness crabs are native to the Pacific coastlines of North America. King crabs, the largest crabs, come from the North Pacific and the Bering Sea. A single king crab can provide as much as five pounds (2.3 kilograms) of meat. Various kinds of stone, rock, and sand crabs are gathered along coasts for food, but they are not commercially important.

A crab's front legs ---.

Crabs

Crabs have fatter, broader bodies than do lobsters, crayfish, and shrimp. Their front legs have large pinching claws. In crabs that swim, the last pair of legs are broad and flattened, serving as paddles. Crabs' eyes are mounted on movable stalks. Crabs that live in water breathe by means of gills. Land crabs have modified gills that function as lungs. Some crabs feed on vegetable matter. Others eat small living animals. Most crabs, however, are scavengers, eating dead or decaying material.

Many different kinds of crabs live throughout the world. Most crabs live in the sea, on or near the bottom. Some crabs live on land, sometimes several miles from water. To lay their eggs, the females must return to the water. Ghost crabs stay on the ocean shore above the high-water line. Fiddler crabs are common along the Atlantic coast in areas of salt and brackish water. The male fiddler has an enlarged right claw that it waves back and forth as a signal to available females and to competing males. Fiddlers live in burrows in the sand or mud, where they stay during winter and high tides.

Most hermit crabs have long, soft abdomens that are spirally coiled. They occupy abandoned snail shells by thrusting the abdomen into the shell and holding onto it. They do not kill the original owner of the shell, though. They will fight other hermit crabs to determine occupancy of a shell. The hermit crab drags the shell behind as it walks about. When the crab grows larger, it seeks a larger shell.

A common crab along the Atlantic and Gulf coasts of the United States is the blue crab. Blue crabs are swimming crabs that live in marine waters but also enter shallow brackish areas.

Crabs are an important food source. Some are canned and others are sold fresh to restaurants. In the United States, three main kinds of crabs are caught for their meat. Blue crabs are caught commercially in open water by trawls or are removed from the mud with dredges. Dungeness crabs are native to the Pacific coastlines of North America. King crabs, the largest crabs, come from the North Pacific and the Bering Sea. A single king crab can provide as much as five pounds (2.3 kilograms) of meat. Various kinds of stone, rock, and sand crabs are gathered along coasts for food, but they are not commercially important.

Swimming crabs have broad, flattened rear legs, which ---.

Crabs

Crabs have fatter, broader bodies than do lobsters, crayfish, and shrimp. Their front legs have large pinching claws. In crabs that swim, the last pair of legs are broad and flattened, serving as paddles. Crabs' eyes are mounted on movable stalks. Crabs that live in water breathe by means of gills. Land crabs have modified gills that function as lungs. Some crabs feed on vegetable matter. Others eat small living animals. Most crabs, however, are scavengers, eating dead or decaying material.

Many different kinds of crabs live throughout the world. Most crabs live in the sea, on or near the bottom. Some crabs live on land, sometimes several miles from water. To lay their eggs, the females must return to the water. Ghost crabs stay on the ocean shore above the high-water line. Fiddler crabs are common along the Atlantic coast in areas of salt and brackish water. The male fiddler has an enlarged right claw that it waves back and forth as a signal to available females and to competing males. Fiddlers live in burrows in the sand or mud, where they stay during winter and high tides.

Most hermit crabs have long, soft abdomens that are spirally coiled. They occupy abandoned snail shells by thrusting the abdomen into the shell and holding onto it. They do not kill the original owner of the shell, though. They will fight other hermit crabs to determine occupancy of a shell. The hermit crab drags the shell behind as it walks about. When the crab grows larger, it seeks a larger shell.

A common crab along the Atlantic and Gulf coasts of the United States is the blue crab. Blue crabs are swimming crabs that live in marine waters but also enter shallow brackish areas.

Crabs are an important food source. Some are canned and others are sold fresh to restaurants. In the United States, three main kinds of crabs are caught for their meat. Blue crabs are caught commercially in open water by trawls or are removed from the mud with dredges. Dungeness crabs are native to the Pacific coastlines of North America. King crabs, the largest crabs, come from the North Pacific and the Bering Sea. A single king crab can provide as much as five pounds (2.3 kilograms) of meat. Various kinds of stone, rock, and sand crabs are gathered along coasts for food, but they are not commercially important.

The best conclusion to make about the article is that hermit crabs live in an empty snail shell ---.

Crabs

Crabs have fatter, broader bodies than do lobsters, crayfish, and shrimp. Their front legs have large pinching claws. In crabs that swim, the last pair of legs are broad and flattened, serving as paddles. Crabs' eyes are mounted on movable stalks. Crabs that live in water breathe by means of gills. Land crabs have modified gills that function as lungs. Some crabs feed on vegetable matter. Others eat small living animals. Most crabs, however, are scavengers, eating dead or decaying material.

Many different kinds of crabs live throughout the world. Most crabs live in the sea, on or near the bottom. Some crabs live on land, sometimes several miles from water. To lay their eggs, the females must return to the water. Ghost crabs stay on the ocean shore above the high-water line. Fiddler crabs are common along the Atlantic coast in areas of salt and brackish water. The male fiddler has an enlarged right claw that it waves back and forth as a signal to available females and to competing males. Fiddlers live in burrows in the sand or mud, where they stay during winter and high tides.

Most hermit crabs have long, soft abdomens that are spirally coiled. They occupy abandoned snail shells by thrusting the abdomen into the shell and holding onto it. They do not kill the original owner of the shell, though. They will fight other hermit crabs to determine occupancy of a shell. The hermit crab drags the shell behind as it walks about. When the crab grows larger, it seeks a larger shell.

A common crab along the Atlantic and Gulf coasts of the United States is the blue crab. Blue crabs are swimming crabs that live in marine waters but also enter shallow brackish areas.

Crabs are an important food source. Some are canned and others are sold fresh to restaurants. In the United States, three main kinds of crabs are caught for their meat. Blue crabs are caught commercially in open water by trawls or are removed from the mud with dredges. Dungeness crabs are native to the Pacific coastlines of North America. King crabs, the largest crabs, come from the North Pacific and the Bering Sea. A single king crab can provide as much as five pounds (2.3 kilograms) of meat. Various kinds of stone, rock, and sand crabs are gathered along coasts for food, but they are not commercially important.

Fiddler crabs probably get their name from ---.

Crabs

Crabs have fatter, broader bodies than do lobsters, crayfish, and shrimp. Their front legs have large pinching claws. In crabs that swim, the last pair of legs are broad and flattened, serving as paddles. Crabs' eyes are mounted on movable stalks. Crabs that live in water breathe by means of gills. Land crabs have modified gills that function as lungs. Some crabs feed on vegetable matter. Others eat small living animals. Most crabs, however, are scavengers, eating dead or decaying material.

Many different kinds of crabs live throughout the world. Most crabs live in the sea, on or near the bottom. Some crabs live on land, sometimes several miles from water. To lay their eggs, the females must return to the water. Ghost crabs stay on the ocean shore above the high-water line. Fiddler crabs are common along the Atlantic coast in areas of salt and brackish water. The male fiddler has an enlarged right claw that it waves back and forth as a signal to available females and to competing males. Fiddlers live in burrows in the sand or mud, where they stay during winter and high tides.

Most hermit crabs have long, soft abdomens that are spirally coiled. They occupy abandoned snail shells by thrusting the abdomen into the shell and holding onto it. They do not kill the original owner of the shell, though. They will fight other hermit crabs to determine occupancy of a shell. The hermit crab drags the shell behind as it walks about. When the crab grows larger, it seeks a larger shell.

A common crab along the Atlantic and Gulf coasts of the United States is the blue crab. Blue crabs are swimming crabs that live in marine waters but also enter shallow brackish areas.

Crabs are an important food source. Some are canned and others are sold fresh to restaurants. In the United States, three main kinds of crabs are caught for their meat. Blue crabs are caught commercially in open water by trawls or are removed from the mud with dredges. Dungeness crabs are native to the Pacific coastlines of North America. King crabs, the largest crabs, come from the North Pacific and the Bering Sea. A single king crab can provide as much as five pounds (2.3 kilograms) of meat. Various kinds of stone, rock, and sand crabs are gathered along coasts for food, but they are not commercially important.

It is likely that the differences among crabs are a result of ---.

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