You can try downloading the Creature Stage Level Editor mod from ModDB and dropping the .package file into the Data and DataEP1 folders. Once you are done, enter Creature Stage and swim out to sea until you get eaten by the Sea Monster. Alternatively, you can install the Spore ModAPI Launcher, install the mod ModCreatorKit through it, enter Creature, Tribal or Civilization Stage, press Ctrl+Shift+C and type in "devContext Game_EditMode" and press enter.
how do you activate it?
You can try downloading the Creature Stage Level Editor mod from ModDB and dropping the .package file into the Data and DataEP1 folders. Once you are done, enter Creature Stage and swim out to sea until you get eaten by the Sea Monster.
Alternatively, you can install the Spore ModAPI Launcher, install the mod ModCreatorKit through it, enter Creature, Tribal or Civilization Stage, press Ctrl+Shift+C and type in "devContext Game_EditMode" and press enter.