Launch from Marina Vallarta for half- to full-day scuba trips to Los Arcos and the Marietas Islands. Ideal for certified divers seeking varied walls and pinnacles, with beginner-friendly options at Los Arcos and guided two-tank dives.
More ways to explore the area's outdoor wonders
Morning light slices across Marina Vallarta as divers gather onshore, fins thumping softly against the dock while crews load tanks into low-profile, fast boats. By 9 a.m. the harbor loosens its hold and the Ameca estuary slides past—often with dolphins racing the bow—before open Pacific blue and the sculpted rock of Los Arcos or the Marietas rise on the horizon.
Difficulty
moderate
Duration
4–6 hours
Fitness Level
Moderate fitness: should be comfortable boarding boats, handling tanks, and swimming in surface chop.
Wildlife
History
The Marietas were used for military target practice in the 20th century and later designated a protected area; that history shaped current restrictions and restoration efforts.
Conservation
Diving occurs inside federally managed marine reserves with permit fees that support park protection; use reef‑safe sunscreen, avoid touching coral, and follow guide instructions.
Reserve your spot on the Scuba Diving Puerto Vallarta Undersea Arcos or Marietas today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring your dive certification card
Marietas requires proof of certification—no card means you may be restricted to Los Arcos or required to pay for a lesson.
Carry small cash for harbor fees
A federal harbor/conservation fee (around 100 MXN) is paid at check-in in cash—have local currency ready.
Prep for boat transfers
Wear non-slip footwear and bring a light waterproof bag for personal items—boats are fast and can spray on exit/entry.
Time your surface intervals
Bring a watch or use your dive computer to track surface intervals—guides schedule short snorkel breaks to maximize total bottom time safely.
Diver certification card
Proof of certification is mandatory for Marietas dive sites.
Reef‑safe sunscreen
Protects skin and minimizes impact on coral and marine life during surface intervals.
summer
Light waterproof bag/towel
Keeps personal items dry on the boat and provides a quick dry for after the return.
Surface signaling device (whistle/SMB)
Useful for additional visibility during surface waits or in choppy conditions.