Two things:
1) Flies, or flying insects.
Especially craneflies, or 'daddy-long-legs'. Why on Earth do they need such freakishly long legs?! I'll never forget one I was cornered by one in my own kitchen. It was hovering in front of my face, getting closer and closer, leaving nowhere for me to escape. In the end I came to my senses and ducked under it, ran out of the kitchen, and shut the door. They petrify the living hell out of me.
2) Octopuses.