- Kingdom: Animalia
- Phylum: Echinodermata
- Subphylum: Echinozoa
- Class: Holothuroidea
- Order: Aspidochirotida
- Family: Synallactidae
- Scientific name: Mesothuria intestinalis
- Norwegian: tarmpølse
You may find this sea cucumber less attractive than many other sea creatures. It is certainly a camouflage expert. It attaches objects from the sea bed to its tubercles, making it very difficult to spot. It may reach a length of 30 cm and a diameter of 6 cm. The mouth, under the body, is surrounded by 20 small tentacles. The color is grey or brown, sometimes with a tint of red or blue.
It thrives on muddy substrate, usually deeper than 20 meters.
It is widespread in the North Atlantic Ocean, from Norway and Iceland to the Azores and the Gulf of Mexico.