A monster? An alien? Nope, this is a macroscopic image of a Polychaete, or bristle worm. They can survive intense sea pressures and some live around deep sea vents, miles below the surface. Life can live in the most peculiar places.
This image, snapped by a low temperature scanning electron microscope (LTSEM), shows a frozen first instar nymph of the Leptinotarsa decemlineata—also known as the Colorado Potato Beetle—magnified 100 times.
Aliens on Earth: macro pictures of praying mantises and bugs by Igor Siwanowicz. Igor cites his main influence as the works of the designer of the monster from the Alien films, HR Giger. A giant devil's flower mantis