When the worm is hunting, the stretchy feeding tube will unfurl and emerge just above its mouth, to cover its prey in a thick, sticky, and slightly pungent mucus. It contains a relatively strong neurotoxin that can paralyse small prey so they quit struggling.
Watch these charismatic creatures shoot their tongues out like arrows to catch an insect, mimic leaves swaying in the wind, and display their hidden colors—and learn just how they do it.
Can 'vibrate you to death' with sounds in excess of 200 dB.