Lissachatina fulica

This is a giant snail from Africa.

It can grow very large. Its shell is often brown and cream.

Some snails even look golden.

These snails love to eat plants. They eat fruits and many vegetables. This can hurt farms.

They like warm and wet places. They may hide under leaves to stay out of the light.

They lay many small white eggs. The eggs hatch in a few weeks. New snails eat their own shells to grow.

It is not good to touch them. They can carry germs that make people sick. Stay safe and watch them from far away.

The giant African land snail is a very large snail.

It is native to East Africa. Now, it lives in many other places. These snails are often called invasive species. This means they move to new areas and cause problems. They can harm farms by eating many plants. They also spread germs that can make people sick.

These snails like warm and wet places. They often hide under leaves to stay out of the light. They need calcium to make their shells strong.

If it gets too dry, the snail can use aestivation. This is a way to rest during hard times. The snail seals itself in its shell to stay safe. It can do this for up to three years.

Each snail has both male and female parts. This is called being a hermaphrodite. They mate at night. A snail can lay about 200 white eggs at once.

These eggs hatch in 8 to 21 days. The tiny new snails eat their own shells to grow. They can live for up to 10 years.

The giant African land snail is a very large living thing.

It is a member of the Achatinidae family. This snail is known as an invasive species in many lands. An invasive species is a living thing that moves to new areas and causes trouble. These snails eat many types of plants, including crops and flowers. They can also spread germs that make people and plants sick.

Because they can cause so much harm, they are prohibited in the United States.

These snails have a very interesting way of living. They like warm and wet places with lots of rain.

To grow a strong shell, they must find enough calcium. If the weather gets too dry, they use a trick called aestivation. This is a way to rest during hard times. The snail seals itself inside its shell with a special hard coating. This helps the snail stay safe for up to three years.

They also eat many things like weeds, fruit, and even cardboard.

Learning about these snails has taken many years. In 1961, Albert R. Mead wrote a famous book about them. His book was called "The Giant African Snail: A Problem in Economic Malacology." It helped people understand how the snails spread around the world. Before the year 1800, they were mostly found in Madagascar. Since then, they have moved to many new places. They reached the Seychelles in 1840 and India in 1847.

These snails have spread to almost every part of the world. They were found in China in 1931 at a place called Xiamen. They reached Hawaii by 1936 and Papua New Guinea by 1946. In Brazil, they were found in 23 different states by 2007. Even in the United States, they have been a big job for officials. They were seen in Miami, Florida, in 1966 and again in 2011.

In 2022 and 2023, new groups were found in Florida near Tampa and Miami.

Every giant African land snail is quite special. Each snail is a hermaphrodite, which means it has both male and female parts. They mate at night with long courtship rituals. A snail can lay about 200 white eggs in one clutch. These eggs hatch in 8 to 21 days. The tiny new snails, called neonates, eat their own shells to grow.

An adult snail can have 7 to 9 whorls in its shell. They can live for up to 10 years in some cases.

The giant African land snail, scientifically known as *Lissachatina fulica*, is a massive species of land snail. It belongs to the family Achatinidae and the subfamily Achatininae.

This snail is considered a major invasive species in many parts of the world. An invasive species is an organism that enters a new area and causes harm to the environment. Because it causes significant damage to crops and can spread diseases, it is a federally prohibited species in the United States. It is illegal for anyone in the U.S. to sell or possess these snails.

Understanding how these snails grow requires looking at their complex biology. They are protandric hermaphrodites, meaning each individual possesses both testes and ovaries. In this species, the testes typically mature first, about 5 to 8 months after birth, followed by the ovaries. While they can self-fertilize, it is rare and results in fewer viable offspring. Most snails engage in bilateral sperm transfer during mating. This process involves a long courtship ritual that can last 30 minutes. Copulation itself can last between 1 and 24 hours, though it usually lasts 6 to 8 hours.

Once mated, a snail can store transferred sperm inside its body for up to two years.

After mating, the snails are oviparous, which means they lay shelled eggs. These eggs are pure white and opaque, though they can sometimes appear slightly yellowish or transparent.

Each egg is approximately 5 mm long and 4 mm wide. A single clutch of eggs averages about 200 eggs, and a snail may lay 5 to 6 clutches per year. The eggs hatch within 8 to 21 days. The newly emerged snails are called neonates. These tiny snails often consume their own shells and the shells of their siblings immediately after hatching. A snail can reach full adult size in about six months. While they live 3 to 5 years in the wild, they can live up to 10 years in captivity.

The physical appearance of *Lissachatina fulica* changes as it matures. A newly hatched neonate has a shell about 5 to 5.5 mm long with 2.5 whorls. As the snail grows, its shell coils in either a clockwise (dextral) or counter-clockwise (sinistral) direction. Younger snails often show a vertical pattern of brown and cream bands. As they age, the new whorls become smooth, glossy, and brown. An adult snail typically has 7 to 9 whorls.

While most have brown shells, coloration is highly variable. Some varieties, like the 'white jade snail' in China, have a buttery yellow body. Others are known as the 'golden' variety, which features a yellow body and yellow shell.

These snails have a very specific way of interacting with their environment. They are macrophytophagous herbivores, meaning they eat a wide variety of large plant materials. They consume fruits, vegetables, ornamental flowers, and weeds. They also eat detritus, which is decaying plant matter. To support their shell development, they require calcium. Because of this, young snails may eat soil to find it. They have even been known to consume cardboard, stucco, and animal feces for protein. To survive harsh conditions, they use a process called aestivation. They burrow underground and seal themselves in their shells with a calcareous compound. This allows them to survive for up to three years without food or water.

The history of the snail's global spread is well-documented. Originally native to East Africa, it spread to Madagascar before 1800.

It reached the Seychelles in 1840 and India in 1847. In 1961, Albert R. Mead published a major work titled "The Giant African Snail: A Problem in Economic Malacology." This book provided a detailed overview of how the snail was moving across the globe. By 1931, the snail was found in China. By 1936, it was established in Hawaii. The snail's movement was often linked to the pet trade, food resources, or accidental shipping.

The impact of this snail is significant for both nature and humans. In Brazil, the snail was recorded in 23 of the 26 states by 2007. In the United States, the snail is a major quarantine concern. It was found in Miami, Florida, in 1966 and again in 2011. In both instances, it took nearly a decade for officials to eradicate the population. Recently, new introductions were found in Florida in 2022 and 2023 near Tampa and Miami. Beyond agricultural damage, the snail can carry the parasite *Angiostrongylus cantonensis*. This nematode can cause serious meningitis in humans through contact or by eating raw snails. This makes the snail a serious threat to public health and global agriculture.