“When you’re underwater for months at a time, you lose all sense of day and night.” Kristen Stewart laments in voice-over as the film opens up; a hint at the potentially Lovecraftian elements to follow. Lovecraftian horror, (a subgenre of fictional horror which *checks notes* places an emphasis of cosmic horror of the unknown or unknowable--with big, giant creatures!), certainly puts the vampires and werewolves Stewart faced in “Twilight” to shame. Admittedly, the thought of Stewart going face-to-face with an enormous aquatic monster--while ruminating on loneliness, the unknowable, the concept of nature getting revenge on man--is ripe for potential. However, all this potential is completely wasted.