Senalaks were plants sometimes deployed as security measures by the Yuuzhan Vong. Consisting of a thin, knee-high stalk, senalaks, when disturbed, released a meter-long thorny cord that would flail around, capturing or killing nearby beings. During the Yuuzhan Vong War, senalak fields were used on the worldship Baanu Rass and later around a prisoner-of-war camp on the planet Selvaris as security fields.