Pollicipes pollicipes

The goose neck barnacle lives in the sea.

It grows on rocks. It can grow on old shipwrecks too. It also grows on wood that floats.

These animals eat tiny things in the water. They catch food as the water passes by. This helps them grow.

People like to eat them. Some people have eaten them for a long time. They have eaten them for 10,000 years!

They live in the Atlantic Ocean. They can be found near France and Spain.

These sea creatures are very special to find.

The goose neck barnacle lives in the Atlantic Ocean.

These creatures grow in groups on rocky shores. They also grow on driftwood. They can even grow on shipwrecks.

They are filter feeders. This means they eat bits of food from the water. They use parts called cirri to catch food. These parts have tiny hairs called setae. These hairs help them catch many things. They eat tiny plants and small shrimp. They also eat tiny sea bugs.

Young barnacles swim in the water for a month. They go through seven stages. After that, they settle down to live in one spot. This is called a sessile life.

Many people like to eat them. They are a special food in Spain. People have harvested them by hand for 10,000 years. Because so many are caught, their numbers may be going down. They live near France, Spain, and Portugal. They can also be found near Morocco and Senegal.

Goose neck barnacles served in a restaurant.

The goose neck barnacle is a special sea creature.

People call it a goose barnacle or a leaf barnacle. It is a type of crustacean. This means it is related to shrimp. These animals are very important to people. Some people think they are a tasty treat. They live in the rocky parts of the ocean.

These animals have a very specific way they live. They are filter feeders. This means they get food from the water. They use parts called cirri to catch bits of food. The cirri have tiny hairs called setae. These hairs help them grab many different things. They eat tiny plants called diatoms. They also eat shrimp and small molluscs.

Barnacles go through many changes as they grow. The young larvae swim freely in the ocean. They go through seven different stages. Six of these stages are called nauplii. The last stage is called a cypris. This whole process takes at least one month. Then, they settle into a sessile form. This means they stay in one spot.

Scientists have studied these creatures for a long time. Johann Friedrich Gmelin named this species in 1789.

They live in many places. Most are between 48°N and 28°N. You can find them in France and Spain. They live in Portugal and Morocco too. Some live as far south as Senegal. They are also rare in the Mediterranean Sea.

Humans have a long history with these barnacles. People have caught them by hand for 10,000 years. This is shown by old archaeological evidence. In Spain, they are called percebe gallego. They can cost as much as €90 per kilogram. Because people catch so many, their numbers may be going down. They grow on rocks and driftwood. They even grow on old shipwrecks.

The goose neck barnacle is a fascinating marine crustacean. Its scientific name is Pollicipes pollicipes. People also call it the goose barnacle or the leaf barnacle. It is a member of the barnacle family. This species is highly valued as a food delicacy. It is especially popular in the Iberian Peninsula. This region includes parts of Spain and Portugal.

These creatures use a specific method to eat called filter feeding. They do not hunt like fish. Instead, they wait for food to come to them. They extend parts called cirri into the passing water. These cirri have a complex assortment of tiny hairs called setae. These hairs act like a net to catch nutrients. This allows them to eat many different things. Their diet includes diatoms, which are tiny algae. They also eat detritus, large crustaceans, copepods, shrimp, and molluscs.

The life cycle of a goose neck barnacle involves several distinct stages. It begins when the larvae are free-swimming in the ocean. These larvae must pass through seven different stages. The first six stages are known as nauplii. The seventh and final larval stage is called a cypris. This entire process takes at least one month to complete. After the cypris stage, the animal settles into a sessile form. Being sessile means the adult stays attached to one spot. They often grow in groups on rocks. They can also be found on driftwood or the hulls of shipwrecks.

Scientists have studied these barnacles for many years. Johann Friedrich Gmelin named this specific species in 1789. We now know that Pollicipes pollicipes has close relatives. One relative is Pollicipes polymerus. That species lives on the Pacific coast of North America. Another relative is Pollicipes elegans. That species is found on the coast of Chile. In 2010, a new species was described near the Cape Verde Islands. This new species is called Pollicipes caboverdensis.

The geographic range of Pollicipes pollicipes is quite large. Most populations live between 48°N and 28°N latitude. This area covers the coasts of France, Spain, Portugal, and Morocco. Their range extends south to Senegal. Some populations live as far north as Ireland. There are also outlying populations on the south coast of England. These English populations might be supported by larvae from core populations. The species is also present in the Mediterranean Sea, though it is rare there.

Humans have a very long history of interacting with these animals. Archaeological evidence suggests people have harvested them for over 10,000 years. Most harvesting is done manually by hand. In the Spanish market, they are known as percebe gallego. They are very expensive to buy. They can sell for as much as €90 per kilogram. Because they are so highly prized, the species is thought to be in decline. This means there may be fewer of them in the wild than before.

Understanding these barnacles helps us learn about ocean ecosystems. They connect the movement of water to the food web. By eating diatoms and small crustaceans, they process nutrients. They also provide a way for humans to study ancient coastal history. The way they settle on rocks and shipwrecks shows how they use the environment. Their survival depends on the health of the rocky shores in the Atlantic.