In 2370, members of this species attempted to communicate with the crew of the Federation starship USS Raman, but the process accidentally caused the deaths of all seven crew members. The beings were then trapped aboard the Raman in the planet's upper atmosphere, where they could not long survive. The individual appearing as Silva La Forge was played by actress Madge Sinclair. According to StarTrek.com, this species' name was Marijnian.