Tentacles are monsters fought on the island with overgrown remnants, which gives a mysterious herb when defeated. Their damage and health is scaled according to the player. Should a tentacle spawn on top of a seed pod, the pod will be destroyed, leaving the root that is targeting it incapable of being nurtured. This results in players having to nurture another root instead.
A different type of tentacle that can't be attacked with conventional means also must be burned with a burning log on the island with the lost souls. These do not retaliate or attack, so players may safely strike at them. Tentacles on the targeted square will be dealt 500 Magic damage every swipe, while others are dealt 250. Soul Split will heal from this damage, and draining Ancient Curses such as Leech Magic or Torment will trigger, although there is no practical effect. Metamorphosis does not affect damage dealt.