It sounds like characters from a StarWars movie, but this has nothing to do with strange creatures from out of space. And then on the other hand, you will meet some quite interesting animals in this area. Akumal is, just like Tulum, a part of Mexico, that you quickly fall in love with. Yal-Ku is a open cenote/lagoon where the ocean meets the freshwater, and you can go snorkeling with different fish. Unfortunately we visited on a cloudy day, so the water seemed a bit dirty compared to the places where we are use to swim around. Yal-Ku is known a the crown jewel of Akumal and a lot of people go here every day to snorkel between different sea creatures. To be honest, we have seen a lot better places all around the planet, but if your are in for a quick dip in the sea, you are said to meet sea turtles once in a while in the lagoon.