Geoduck

The geoduck is a very large clam.

It lives in the salty ocean. It stays deep in the sand. It has a very long tube. This tube helps the clam eat. It sucks in water to find food.

This clam can live a long time. Most live to be 140 years old. Some have lived to be 179 years old! It is a very special sea animal.

The geoduck is a very large saltwater clam.

It lives in the Pacific Ocean. You can find them from Alaska to Baja California. This clam is the largest burrowing clam in the world. That means it is the biggest clam that lives in the sand.

Geoducks live for a very long time. Most live to be 140 years old. One clam lived to be 179 years old! Scientists can tell their age by looking at the shell. The shell has annual rings. These are tiny lines that form every year.

To eat, the clam uses a long tube called a siphon. It sucks water through the siphon to find food called plankton. It then lets out waste through a different hole. This siphon can be over 3 feet long. Many animals try to eat them. Sea otters and starfish will attack the siphon. Because they have few predators, they live many years. They are very popular in many foods. People in China and Japan enjoy eating them.

{ "text": "The Pacific geoduck is a very large saltwater clam.

It belongs to a family called Hiatellidae. This clam is the largest burrowing clam in the world. You can find them in the eastern North Pacific Ocean. They live from Alaska down to Baja California. Many people call them the king clam or mud duck. The name geoduck comes from the Lushootseed word \"gʷəč." \n\nHow does this giant clam live and eat? It stays hidden under the sand or mud. The clam uses a very long tube called a siphon. This siphon can be over 3 feet long. The clam sucks water down through the siphon to find food. This food is tiny living things called plankton. It filters the food from the water. Then, it pushes its waste out through a separate hole in the siphon.

\n\nGeoducks are famous for living a very long time. Most of these clams live for about 140 years. One very old clam lived to be 179 years old! Scientists can find the age by looking at the shell. The shell has annual rings that form every year. These rings are like the rings inside a tree trunk. They also show how the ocean changed in the past.

\n\nThere is a big industry for harvesting these clams. The first geoduck fishery started in 1970. Today, it is an $80-million industry. People harvest them in Alaska, Washington, Oregon, and British Columbia. They are very popular in China. In China, they can sell for over US$100. In Japan, people eat them as raw sashimi.

\n\nEven though they are tasty, geoducks face many hard jobs. They have few natural predators to worry about. However, sea otters and dogfish can pull them out of the sand. Starfish also attack their long siphons. Because they produce so many eggs, you might think they grow back fast. But their populations actually grow back very slowly. It can take 39 years for a harvested area to recover in Puget Sound.", "media": [ "File:Geoduck Growth Increments.jpg", "File:Jrb 20081127 Mirugai tsukiji tokyo japan 001.JPG" ] }

The Pacific geoduck, known scientifically as Panopea generosa, is a massive saltwater clam. It belongs to the family Hiatellidae and is the largest burrowing clam on Earth. These bivalve mollusks live in the coastal waters of the eastern North Pacific Ocean. Their range extends from Alaska down to Baja California. The name "geoduck" comes from the Lushootseed word gʷəč. There is some debate about the exact meaning of this name. Some researchers believe it is a phrase meaning "dig deep." Others suggest it refers to the shape of the clam.

Geoducks have a unique way of feeding while buried in the seafloor. They use an extremely long siphon to reach the water above. The shell itself ranges from 3 to over 6 inches in length. However, the siphons can extend over 3 feet long. This siphon acts like a straw for the clam. The geoduck sucks water containing plankton down through the siphon. It then filters the water to capture the food. Finally, it ejects its refuse through a separate hole in the siphon.

These clams are famous for their incredible longevity. A typical geoduck lives for about 140 years. The oldest recorded specimen reached 179 years of age. Scientists can determine their age by studying the shell. The shell contains annual rings deposited each year. These rings are similar to the rings found in trees. By using a method called crossdating, researchers can assign these rings to specific calendar years. These rings also act as a historical archive of past marine variability.

Despite their long lives, geoducks face several biological challenges. They are broadcast spawners, meaning they release eggs and sperm into the water. A single female can produce about 5 billion eggs in her lifetime. However, the survival rate for eggs and larvae is very low. This low recruitment rate means populations grow back slowly. In Puget Sound, it can take 39 years for a harvested area to recover. They also face predators like sea otters and dogfish. Starfish may also attack the exposed siphons of the clams.

Geoducks are part of a massive global industry. The first geoduck fishery began in 1970. Today, it is an $80-million industry. Harvesting happens in Alaska, Washington, Oregon, and British Columbia. The clams are highly valued in China, where they can sell for over US$100. This high value has led to problems with poaching. Because of this, the fisheries are very strictly regulated. In Washington, officials monitor harvests constantly to ensure rules are followed.

Technology has helped make the industry more efficient and safer. In the past, many clams died before reaching customers. In 2001, only 10 percent of clams were delivered live to market. By 2007, new testing systems helped 90 percent of clams arrive alive. These systems test the water and the clams before they are harvested. This ensures the clams are not holding pollutants. Delivering live clams is much more profitable for harvesters. This advancement has helped the industry continue to grow.

Geoducks are also a significant part of various culinary traditions. In China, they are often eaten in a hot pot. In Korea, they might be eaten raw with spicy sauce or in soups. Japanese cuisine often features them as raw sashimi with soy sauce and wasabi. Their meaty siphon is prized for a savory flavor and crunchy texture. Some people even regard them as an aphrodisiac due to their shape. They have even become a part of popular culture. For example, The Evergreen State College in Washington uses a geoduck named Speedy as its mascot.