General Information
Homeworld Preplanis
Body Type Simian
Height Same as a young Chimpanzee
Locomotion Facultative biped
Sapience Level Non-Sapient
Behavior Docile
Status EX
Behind the Scenes
Universe Lost in Space

A Bloop is a non-sapient simianoid species native to the forests of planet Preplanis.


Named after the distinct call it makes, the Bloop is a small creature which looks strikingly similar to an Earth chimpanzee, except for the enlarged cranium with long ears.


A member of this species was adopted as a pet by Penny Robinson, after the starship Jupiter 2 crash landed on the planet. The Bloop, nicknamed Debbie, proved herself to be a remarkably docile creature. Presumably, she became the last member of her race following the destruction of Preplanis.


  • Lost in Space
    • s01e03, "Island in the Sky" (1965)
    • s01e04, "There Were Giants in the Earth" (1965)
    • s01e05, "The Hungry Sea" (1965)
    • s01e09, "The Oasis" (1965)
    • s01e14, "Attack of the Monster Plants" (1965)
    • s01e15, "Return from Outer Space" (1965)
    • s01e21, "The Magic Mirror" (1966)
    • s02e01, "Blast Off Into Space" (1966)
    • s02e02, "Wild Adventure" (1966)
    • s02e14, "The Dream Monster" (1966)
    • s02e30, "The Galaxy Gift" (1967)
    • s03e01, "Condemned of Space" (1967)
    • s03e02, "Visit to a Hostile Planet" (1967)
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