“The great dragon was thrown down, that ancient serpent, who is called the devil and Satan, the deceiver of the whole world—he was thrown down to the earth.”
(Revelation 12:9 ESV)

I was visiting an aquarium recently and I noticed a large moray eel hiding in a deep underwater coral reef. The long, scaleless body of the eel startled me as it resembled a sea serpent. Green morays are sedentary predators with strong sharp teeth. This solitary animal hides among cracks and crevices, along rocky shorelines, and in coral reefs. They feed mostly at night on fishes but rather than hunting for food, they wait until food comes to them.(1) As I observed the behavior of this creature I reflected upon what the Bible says about our adversary Satan. He preys upon human souls who venture out into temptation. Satan waits in the shadows for people to fall into sin and then he tears them apart pulling them down to the dark depths of Hell. Repent from sin and avoid this monster of the deep.

1) http://www.aqua.org/explore/animals/green-moray-eel