👉 Pinnas, also known as pinnacles, are large, rocky outcroppings in the form of cones or boulders that rise to a height of up to 100 feet (30 meters) above the ocean floor. They can be found on both land and sea, but they are most commonly found along the coasts of the Pacific Ocean and Atlantic Ocean. Pinnacles are formed by the accumulation of sediment over time in areas where there is a high concentration