A true terror of the deep, Merpuses have hundreds of feet of tentacles connected to a head and uses them to injects the same chemicals released during REM sleep that are believed to induce dreaming to seemingly paralyze its prey before it feasts on it. It is believed that it uses these chemicals to lull the creature into a deep and pleasant sleep to avoid eliciting a fear response, because it prefers the taste of flesh untainted by adrenaline. Unfortunately, there is no way to assess this hypothesis.