Tatsunoko Production is a Japanese animation studio founded in 1962 in Tokyo, known for series such as Speed Racer, Science Ninja Team Gatchaman, Yatterman and Casshan. Its name and seahorse logo became familiar worldwide through television broadcasts and home video releases of those shows. The production ident sound attached to its programmes later circulated on soundboards and in fan edits detached from any single series. It remains popular because it instantly evokes early anime television, giving modern clips a deliberate retro framing without needing any dialogue or explanation.