Hanauma Bay is a place for diving in Hawaii. Shallow water, small waves, many fish, beautiful scenery, there are a variety of natural coral reefs and tropical fish. Dinosaur Bay is an underwater extinct volcano. The crater side of the volcano collapsed under the constant beating of waves for thousands of years, and became like a horseshoe shape. So it is also called horseshoe Bay. Dinosaur Bay is the name given by the Chinese, because from one end of the bay, it looks like a dinosaur nesting in the sea. Unfortunately, there are fewer and fewer fish and parking is free.