What is a penis fish?

The "penis fish" (Urechis unicinctus) is the common name for a marine creature known as the "fat innkeeper worm". It has other names, such as "fat innkeeper" or "gaebul" in Korean cuisine. Despite its name, the penis fish is not a fish but a type of spoon worm or marine worm.

Penis fish are cylindrical and can grow up to several feet in length. It lives in caves on the muddy or sandy seafloor along the Pacific coast, especially off Korea, Japan, China and Russia. The cave of the penis fish is U-shaped, with one end open for feeding and the other end closed for excretion.

In some cultures, especially in East Asia, penis fish are considered a delicacy and are often eaten raw or steamed. It is known for its phallic appearance, which has led to its common name "penis fish." Despite their unusual appearance, penis fish are rich in protein and other nutrients.

While penis fish are considered a delicacy in some regions, they are not commonly seen in Western countries. Additionally, improper handling or consumption of raw or undercooked marine life may pose health risks due to potential parasites or bacteria. Therefore, it is important to ensure that any seafood, including penis fish, is properly prepared and cooked before consumption.