Eunice aphroditois is a type of ocean worm growing up to ten feet long and hiding under the sand.
Your prompt is BOBBIT WORM.
Technicolor worm
Waits for prey with open jaws
Snatch and devour
It senses prey with five antennae and can reproduce by splitting itself into multiple parts.
A cousin to an inch worm, Bobbit takes a bow
Three yards long, antennae sense prey, feeds.
A split personality divides, multiple ways
Kindred arrive, slice/dice then grow apart
I’m thinking of Lorena Bobbitt (remember her?) when I write:
Sharpened to a point
Knife cuts through penile member
Bobbit worms devour