Scientists have discovered a thriving ecosystem beneath an Antarctic glacier, including corals, octopuses, and giant sea spiders. The glacier, named A-84, broke away from the George VI Ice Shelf in January 2025, revealing a seafloor that had been hidden for centuries. The research team used an underwater robot to explore the depths and found large coral reefs and sponge fields teeming with marine life. The discovery highlights the hidden wonders of our world and the need for further study to understand how these creatures have survived in such extreme conditions.