Sun, 03 May 2026 14:42:50 +0000

Nighttime Jellyfish Panic: Scientists Discover Why These Creatures Can’t Swim in the Dark Have you ever watched in quiet awe—or mild panic—jellyfish suddenly drift restlessly during nighttime, their alien, pulsing forms glowing eerily beneath moonlit water? A recent scientific breakthrough sheds light on a fascinating mystery: why many jellyfish species struggle to swim when darkness falls, uncovering hidden secrets about their biology and behavior in low-light conditions. ### The Nocturnal Dilemma: Jellyfish Suffer in the Dark For decades, marine biologists observed a puzzling phenomenon—jellyfish become sluggish swimmers at night. While some species seem to thrive in darkness, others exhibit a distinct panic response, struggling to move efficiently. New research reveals this isn’t just a curiosity—it’s rooted in the jellyfish’s sensory biology and evolutionary adaptation to light.