The sea pig lives in the deep sea. It is a small, white animal. It has many long legs. It uses its legs to walk on the floor. It eats bits of food that sink down. Do you think it is cute?
The sea pig lives in the deep sea. It is a small, white animal. It has many long legs. It uses these legs to walk on the floor.
These animals like to stay in groups. They often face the ocean current. This helps them find fresh food. They eat bits of food that sink down.
Sometimes they find a dead whale. They use smell to find it. This food is very good for them. They can find food in many oceans.
Some small crabs live with them. The crabs help keep them safe. The sea pig is a very busy walker.
The sea pig is a small animal from the deep sea. Scientists call it Scotoplanes globosa. A man named Hjalmar Théel first found them. He saw them during a trip between 1873 and 1876. These animals live on the abyssal plain. This is a very flat area on the deep ocean floor. They live in many oceans. Some live in the Arctic or the Pacific. They can live very deep. They have been found in the Philippine Trench. That place is 9,997 meters deep!
Sea pigs are white and see-through. They have a soft, round body. They have many long, tube-like legs. They use these legs to walk. They push fluid in and out of the legs to move. This is a special way to walk. Sea pigs like to live in groups. A group is called a trawl. A trawl can have 600 sea pigs! They often face the ocean current. This helps them find good food. They eat bits of food that sink to the floor. They use tentacles to catch food. They can even smell a dead whale. This helps them find a big meal.
Sea pigs have many long legs to walk on the floor.
They live in large groups called a trawl.
They use smell to find food like dead whales.
The sea pig is a special kind of sea cucumber. Its real name is Scotoplanes globosa. These animals live in the deep, dark parts of the ocean. They live on a flat area called the abyssal plain. You can find them in almost all deep-sea regions. They live in the Arctic and the Atlantic Oceans. They are also in the Indian and Pacific Oceans. Some live near the coast of San Diego.
Sea pigs have a very interesting way of moving. Their bodies are soft and round. They have five to seven pairs of long, tube-like limbs. These limbs are actually feet used for walking. They move by using muscles to push fluid in and out of the feet. This is the only way any sea cucumber has been seen to walk. They are usually white and see-through. They can be between 2 and 15 cm long.
A Swedish scientist named Hjalmar Théel found them. He saw them during an expedition from 1873 to 1876. He officially described the species in 1882. This was 6 to 9 years after he first saw them. The Galathea expedition found them in very deep places later. They found them in the Philippine Trench in the 1950s. That trench is 9,997 m deep. They also found them in the Kermadec Trench at 6,659 m.
Sea pigs like to live in large groups. A group of them is called a trawl. Most groups have 10 to 30 individuals. Some huge groups have as many as 600 sea pigs. They often face into the ocean current. This helps them find the best places to eat. They eat bits of food that sink to the floor. They use mucus-covered tentacles around their mouths to catch it. They even use smell to find dead whales.
Other creatures live near the sea pig too. Some small snails called Stilapex and Crinolamia live on them. These parasites bore tiny holes into the sea pig's body. Some crabs called Neolithodes diomedeae also stay with them. About 22% of sea pigs have at least one crab. The crab gets food and movement from the sea pig. The sea pig might get protection from parasites. Scientists are still learning if this helps both sides.
The sea pig, known scientifically as Scotoplanes globosa, is a unique species of sea cucumber. These animals live in the deep parts of the ocean called the abyssal plain. They play an important role in the deep-sea ecosystem by cleaning the ocean floor. As deposit feeders, they eat detritus, which is organic matter that sinks from above. This process helps recycle nutrients in one of the largest habitats on Earth. Understanding these creatures helps scientists learn how life survives in extreme environments.
Locomotion, or movement, is one of the most distinctive features of the sea pig. They have a soft, round body that is typically translucent white in color. Extending from this body are five to seven pairs of long, tube-like limbs. These limbs are actually feet rather than antennae. To move, the sea pig uses muscle constrictions to push fluid in and out of the feet's cavities. This mechanism allows them to "walk" along the seafloor. Scotoplanes is the only genus of holothurians, a group of sea cucumbers, observed to walk this way.
Anatomy plays a major role in how these animals interact with their world. A sea pig is usually between 2 and 15 cm in length. They possess bilateral symmetry, meaning their left and right sides are mirror images. In addition to their walking limbs, they have tube-like feet on their upper surfaces. Scientists are still researching if these upper feet are for movement or sensory accessories. These structures are quite buoyant. This means they can be easily moved by strong ocean currents.
Sea pigs are often found in large social groups. A congregation of these animals is called a "trawl." While many groups consist of only 10 to 30 individuals, some trawls reach 600 members. These groups often face into the ocean current. This behavior is believed to help them detect the richest feeding sites. By facing the current, they can better sense where fresh food is coming from. This social structure helps the entire group find nutrients more efficiently.
Finding food is a vital task in the deep sea. Sea pigs are deposit feeders that eat sediment on the ocean floor. They strongly prefer fresh sediment that has fallen within the last 100 days. This newer sediment is more nutrient-rich than older material. They use mucus-covered tentacles around their mouths to capture this food. They can even locate large whale carcasses by using their sense of smell. These carcasses provide massive amounts of nutrients that attract many different deep-sea creatures.
The history of discovering the sea pig began with Hjalmar Théel. He was a Swedish scientist who first encountered them during an expedition between 1873 and 1876. It took several years to officially describe the species. Théel officially described Scotoplanes globosa in 1882, about 6 to 9 years after his first sighting. Later, the Galathea expedition in the 1950s discovered them in incredibly deep locations. They found them in the Kermadec Trench at 6,659 meters. They also found them in the Philippine Trench at a depth of 9,997 meters.
Many other organisms interact with the sea pig in the deep ocean. Some are parasites, such as the small gastropods Stilapex and Crinolamia. They also host various parasitic crustaceans. These parasites typically bore small holes into the body wall of the sea pig. However, some relationships might be helpful. About 22% of sea pigs are accompanied by a symbiotic lithodid crab called Neolithodes diomedeae. The crab may gain food and movement by latching onto the host. In return, the sea pig might receive protection from parasites. Scientists are still studying if this is a mutualistic or commensal relationship.
Where will your curiosity go next?
More to explore
✨ What else?
Related topics you might enjoy
🪜 Step back
Simpler topics to build understanding
What is Nepedia?
A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.