lava forms when lava pours into the ocean. The lava cools fast and
makes a ball. As the lava continues to flow it forces an opening in
the crust of the pillow and more flows out to form another pillow
shape. Pillow lava is made from basalt lava flows that reaches a source
of water. Sometimes scientists find pillow lava strings on the land.
That helps them to know that an area of land was under water in the