Swimming stone in water - Pumice!

There is a rock in the world called Pumice, and surprisingly this rock can easily swim on water. 🌋 This stone is formed on the eruption of a volcano. When the hot lava cools down fast, it becomes a lot of little holes (air bubbles). These holes make it light. 🌊That's why Pumice is very less weight and it starts swimming instead of drowning in water. Many times thousands of stones have been seen swimming together in the sea. 😲 This is why this stone is considered a unique and interesting example in the world of science.