Beneath layers of rock art are drawings of animals SO strange that, for a long time, some anthropologists thought they could only have been imagined. But what if these animals really had existed, after all? For more videos like this, check out our Youtube channel: youtube.com/eons | Eons • PBS

A colossal ancient megafauna creature, resembling a massive whale-shark hybrid, slowly emerges from the icy ocean beside a small expedition ship. The creature’s skin is textured with frost and ocean scars, dwarfing the vessel as floating ice drifts around it. Cold mist rises from the water, and subtle ripples spread as the giant body moves. The camera is positioned close to the ship’s railing, emphasizing the overwhelming scale difference. Overcast polar sky, muted blue and gray tones, cinematic