The wall entry is actually a little intimidating, but not difficult. The exit is a little difficult and not recommended in higher surf (3-4 ft.). There are many different varieties of fish and eels. Many sea turtles can be spotted. Avoid entering the canyons too far, as they narrow and the surge could cause injury. If you swim far enough out toward Hanauma Bay, you will see several sea caves with a multitude of fish. I have been told that sometimes sharks can hang out in these caves, but I have not seen them.