Complex sentence: Anglerfish can wiggle the esca to make it resemble a prey animal, luring other predators close enough for the anglerfish to devour them whole: the jaws reflexively shut upon contact to the tentacle.
Split into simpler sentences: Anglerfish can wiggle the esca to make it resemble a prey animal, which lures the anglerfish's prey close enough for the anglerfish to devour them whole. The jaws reflexively shut upon contact to the tentacle.