I'd seen the still photo of bobbit worm many years ago. It does look scary in the photo... but really can't compare when I saw it moved with my own eyes.
While waiting to record some action, this poor toby fish (aka. pufferfish) just swim in the bad situation. There's no herding, or abusing this fish to swim in that direction. It just coincident and I'm just lucky to keep the record button on.