A strange geological formation occurs along the Pacific coast of the northwest United States. They are found especially along the Washington and Oregon coasts. Islands that pop out of the ocean and are particularly tall. They make for picturesque scenery.
Sea stacks are found around the world. A different type of stack is the Flower Pot Rocks along the coast of the Bay of Fundy in New Brunswick.
A stack is a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast, isolated by erosion. Stacks are formed through processes of coastal geomorphology, which are entirely natural. Time, wind and water are the only factors involved in the formation of a stack. They are formed when part of a headland is eroded by hydraulic action, which is the force of the sea or water crashing against the rock. The force of the water weakens cracks in the headland, causing them to later collapse, forming free-standing stacks and even a small island.
Flower Pot Rocks in New Brunswick