Senalak
this thin, meter-long organic spike was developed by the Yuuzhan Vong as a defense mechanism. Senalaks were grown in much the same was as grass or reeds, thriving in sandy soil. The roots of the senalak were also covered with thorns, and ravenously dug themselves into the soil. The blue tip of a senalak shaft contained a strand of thorn-studded cord, which was ejected and whipped about whenever an enemy presence disturbed the shaft. The thorny cord would then catch in the clothing or skin of the enemy, trapping it as the cord retracted back into the shaft.