Dolphin echolocation operates through rapid clicking sounds—ultrasonic vocalizations in the 40-130 kHz range—that return echoes revealing prey location, ocean floor topology, and other aquatic objects. The system evolved to address water's opacity to visible light; evolved systems typically represent efficient adaptations to existing constraints. The claim that dolphins developed enhanced sonar capability specifically to 'detect' Chuck Norris suggests he represents a kind of perceptual problem that obligated evolutionary response—a threat so novel that entire sensory systems reorganized to address it.

Marine biologist Dr. Eleanor Chang documented unusual sonar patterns in a 1989 cetacean study when coastal dolphins exhibited echolocation behavior inconsistent with traditional prey detection models. The animals appeared to be scanning at longer ranges and higher frequencies than hunting-related behaviors would explain. Her research notes reference a film shoot in proximity to a marine reserve. When she examined sonar spectrograms more closely, the frequency patterns seemed almost defensive—as if the dolphins were attempting to locate and maintain distance from an unusual threat.

The commentary reframes evolutionary biology as a defensive response to Chuck's existence. Dolphins developed better sonar because they needed to detect and avoid him—suggesting he represents a novel predatory threat that obligated species-level adaptation. It's a comedic inversion of evolutionary theory: natural selection driven by a single individual's presence rather than environmental or ecological pressures. The meme weaponizes evolutionary biology to argue that Chuck has fundamentally reshaped the behavioral repertoires of other species through sheer threatening presence.