Yes, jellyfish are edible, crisp and nutritious. According to records, China was the first country to eat jellyfish. Jellyfish is a kind of seafood with high nutritional value, which is rich in collagen and bioactive components. Jellyfish also has a wide range of medicinal effects and is an important component of many traditional Chinese medicine prescriptions. According to Compendium of Materia Medica, jellyfish is sweet, salty, warm and nontoxic. It is mainly used for treating female strain, hematocele, erysipelas and scald of children.