Two trademarks filed by Nintendo suggest the half-man, half-fish virtual pet Seaman could be getting a revival, according to Japanese blog Esuteru.

In Japan, Nintendo has registered trademarks for "Mysterious Pet: Legend of the Fish With A Human Face" and "Mysterious Partner: Legend of the Fish With A Human Face," both of which point to developer Vivarium's games starring the infamous creature. Current rumors point to the possible new game being released for the Nintendo 3DS.

In 2010, Seaman creator Yoot Saito teased via Twitter that he was working on something related to Seaman. In early 2012, Japanese publication Nikkei reported Nintendo was involved in rebooting the series.

Seaman originally launched for the Sega Dreamcast in July 1999 in Japan and the following year in North America. The game was ported to PlayStation 2 in Japan in 2001. A sequel, Seaman 2, was released for PlayStation 2 in 2007. In the games, players were tasked with caring for their Seaman fish, which sports a human face based on Saito's own image. The original game's English version was narrated by Leonard Nimoy and emphasized use of the Dreamcast's microphone peripheral.