Tama-chan (タマちゃん?) is the name given to a male bearded seal which was first spotted on August 7, 2002 near Maruko Bridge on Tama River in Tokyo, Japan, and subsequently became a national celebrity in Japan.
Tama-chan is named after the river (Tama) where he was first sighted. Strictly speaking, Tama is the actual name of the seal, and the -chan suffix is a Japanese title (similar to -san) which marks endearment and/or cuteness.
The first sighting of the seal was reported heavily in the Japanese media amid speculation as to whether the normally arctic seal could survive in a Tokyo river during summertime. Subsequent sightings generated massive publicity as huge crowds gathered to watch and TV crews broadcast live footage across Japan.
Tama-chan subsequently moved to rivers in nearby central Yokohama where he was a regular sight in Tsurumi and Katabira Rivers for the following months. Thousands gathered on bridges in the city daily to catch a glimpse of the celebrity animal. Merchandise went on sale and fan clubs were organised, and daily updates on Tama-chan were broadcast on TV. Seeing the seal was said to have a "healing" effect on people.
Yokohama's Nishi Ward even granted an honorary jūminhyō (residency registration) to Tama-chan. In early 2003 this prompted a group of foreign residents protesting against the fact that jūminhyō is only open to Japanese citizens (foreign nationals were registered under a separate system), to stage a march with whiskers drawn on their faces to demand a jūminhyō even though Saitama Prefecture has given fictional jūminhyō to public fixtures before either real or imaginary, such as Crayon Shin-Chan. That system was later changed, and from July 9, 2012 foreign nationals residing in Japan are registered in the jūminhyō.