Gripper

Grippers are large plants that resemble Venus Flytraps. They sit and lie in way, invincible and untargetable while they aren't moving, until Samus moves close enough for her to consider them monsters, or even hit them. Ones that area already moving do not get this little time of invincibility.

Like Metroids, if a Gripper grips Samus in its grip, it begins chewing away her life in its tight grip unless you loosen its grip by gripping yourself into a Morphball and dropping a few situationally gripping bombs.