Walk under the sea in Xel-Ha: SeaTrek 10% Off!! More In Xel-Ha is possible to walk on the seabed. With the help of modern technology that ensures maximum security, even non-swimmers can enjoy the experience of seeing the marine life of the most beautiful natural aquarium in the world. Surround yourself with colourful fish and the most varied and amazing vegetation of the Caribbean Sea. The Sea Trek® helmet allows you to breathe comfortably, naturally and safely under water. Sea Trek® diving requires no training; our experienced guides will accompany you during your walk underwater. Enjoy a walk like you never thought! Come to Xel-Há and enjoy a unique EXPERIENCE.