Weed Creature
The weed creature was an intelligent, semi-mobile form of seaweed that once inhabited the Atlantic Ocean.
Weed creatures fed on gas and had stingers. It could release poisonous gas or a foam that allowed it to mentally control those it touched. The victims were then able to exhale gas. The weed creatures were vulnerable to oxygen and high-pitched sound. The Doctor was able to defeat the one he encountered by using a recording of Victoria Waterfield’s screams which destroyed its nerve centre.
Appearances
Fury from the Deep (TV)