Kochira Katsushikaku Kameari Kouenmae Hashutsujo: Seton Tankentai! Sumidagawa no Chikai - Omoide no Shiroi Kujira wo Sagase!
Japanese title: こちら葛飾区亀有公園前派出所 シートン探検隊!隅田川の誓い〜思い出の白い鯨を探せ!〜
Type: Special
Episodes: 2
Source: Manga
Genres: Comedy
Studios: Gallop
Duration: 20 min per ep
Rating: PG-13 - Teens 13 or older

The two-part Kochikame special, wherein Ryoutsu helps a zoologist friend capture a real white whale.