Whipvine

Unidentified Life Form 56 is a stationary, plant-like entity that appears in Metroid: Other M, in the Biosphere onboard the Bottle Ship. It usually appears as a small, orange pod affixed to a wall, and is invulnerable to all weapons. However, when Samus approaches, the pod will open and extend a long, coiled tentacle similar to the Reaper Vine of Tallon IV. If Samus gets within the creature's reach, it will grab her, shake her about, and electrocute her before letting go. When open, ULF 56 is vulnerable to a single Missile blast.