Umi Jigoku or ocean blue hell is a cobalt blue color. There is also an ashiyu foot bath here as well with water a more comfortable temperature at 40C. Umi was the first of the hells to be designated as places of scenic beauty by the government of Japan. In addition to its sea hell and foot bath, there is an attractive Japanese garden surrounding the venue. The hells or jigoku of Beppu are eight spectacular hot springs for viewing rather than bathing in - which would be rather dangerous as temperatures can go up beyond 60C. Most of the hells are presented to visitors in a touristy fashion, that is “extra” attractions such as piranhas and crocodiles.