Cueva de los Peces is a cenote, a small, deep lake, which communicates with the sea by an underground tunnel. You can snorkel here or to encourage more and longer use oxygen equipment. Next to the cenote have mounted a position of food and drinks where you can taste fish, seafood and even crocodile meat. Inside the cave, of course, an abundance of colorful tropical fish. If you are an expert diver as you have very deep underwater caves, but it is not common to do this tour so do not animes alone.