Pillow lava

Pillow lava is a kind of lava that flows out of a volcano and looks like lots of little pillows all packed together. When the hot lava oozes out of the volcano, it cools quickly when it hits the cold ocean water. This causes the lava to solidify into a bulbous shape, with a round top and a lumpy, wavy bottom.

Think of it like how playdough would look if you squeezed it hard in your hand - it would kind of puff up and look a bit like a small pillow. This is similar to what happens with pillow lava, except it's made from solidified lava and has a lot more detail to its shape.

Pillow lava is important because it tells scientists a lot about how underwater volcanoes work. When they study pillow lava, they can learn about the temperature and composition of the lava, as well as how quickly it cooled down. This information helps scientists understand more about how our planet works and how volcanoes affect the Earth.