👉 Nesomyrmex, also known as the brown snail, is a type of freshwater snail that lives in the ocean. It belongs to the family Myrmicinae and is part of the order Enlygiidae. The snails have a cylindrical body with a round head and a pair of long, slender arms called tentacles. They are known for their ability to grow up to 10 feet (3 meters) in length and can live for hundreds of years.