Sea of Unseen on Instagram: "They told us the ocean was mapped, explored, and understood… but they never told us it still hides nightmares within its depths. 🌊❄️ Here’s what they don’t tell you about the biggest ice breaker in the world: ✅ These nuclear-powered giants can crush through ice thicker than a 3-story building. ✅ Their hulls are designed to ride UP onto the ice, using the ship's immense weight to smash through. ✅ They carve paths through frozen seas that would trap ordinary vessels f