"Chirimen" is a general term for processed products made from dried whitebait and dried small sardines. Other living creatures may be mixed in with these processed products, and a game of searching for these creatures, which are called "Chirimen Monsters," is played. Most Chirimen Monsters are bottom-dwelling or pelagic animals, and the majority are various types of young fish and the larvae of arthropods such as shrimp and crabs. Searching for Chirimen Monsters is a game that allows you to easily experience the diversity and classification of marine life.