Icebergs look very different when flipped upside down
When most people think about an iceberg, they usually imagine a big chunk of whitish-blue ice. They look like that because their tops are normally frosted over with layer upon layer of packed snow. This makes us wonder how they might look underneath the water.
As it turns out, they look very dissimilar. The bottoms of icebergs are translucent and have a more blue-green tint. The difference is due to the increased pressure they suffer underwater that squeezes out any air pockets that buffer the crystals.