World Class Dive Spots
Expert Intructors, Guides & Unmateched Service
Premium Service with Water, Snacks & Fullly Equipped vessels
Various Tank Sizes available
Why Cozumel?
Cozumel is home to the Mesoamerican Barrier Reef, the second largest coral reef system in the world. With crystal-clear visibility, warm water, and vibrant marine life, it's the ideal place to fall in love with diving.
Milly Marinhno
About me
Hi, I’m Milly Marinhno, a freelance PADI scuba instructor, Trimix diver, and professional underwater photographer based in beautiful Cozumel, Mexico. Originally from the UK, I bring over 7 years of experience guiding and teaching divers across the vibrant reefs of the Yucatán Peninsula.
At MillyUnderwater, I specialize in private scuba diving tours and underwater photo experiences tailored to your skill level and interests. Whether you're trying Discover Scuba Diving for the first time, refreshing your skills, or exploring night dives and advanced specialties, I’ll be there to guide you with care and passion.
My mission is simple: deliver a safe, unforgettable, and fun dive experience—with a touch of concierge service. I handle every detail so you can relax, explore, and capture the magic of marine life in Cozumel’s world-renowned coral reefs.
Your Scuba Diving Journey Starts Here - Cozumel’s Best Dive Courses
Discover scuba diving in Cozumel
No certification? No problem. Discover the magic of scuba diving in Cozumel with a personalized, safe, and exciting first dive experience. Learn basic skills and breathing techniques before exploring a vibrant reef under the supervision of a certified instructor. Perfect for curious travelers and ocean lovers
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Open Water Course - Learn to Dive in Cozumel
Start your scuba journey with our PADI or SDI Open Water Course in Cozumel. Learn the fundamentals of diving in warm, clear waters with one-on-one instruction. Ideal for beginners ready to explore the underwater world with confidence.
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Fun Diving in cozumel
Certified and ready to dive? Join us for fun dives in Cozumel’s world-class reefs. Whether you’re recently certified or returning to the water, our guided dives offer small groups, great visibility, and unforgettable marine life — all with comfort, safety, and personalized attention.
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