Las Caletas in Los Arcos National Park offers a diverse underwater environment featuring natural reefs, artificial reef structures, and caves. The site is accessible only by boat and is suitable for beginners, though the depth range of 20 to 30 metres requires careful attention to recreational limits. Visibility typically ranges from 10 to 20 metres with mild currents. Species recorded around this area include wrasses, groupers, various moray eels, and angelfish. Due to the depth, divers should manage nitrogen narcosis risks and remain vigilant regarding active boat traffic. Guided tours are available to assist with navigation and safety protocols during the typical 40-minute dive.

Majahuitas Cove is a secluded reef site located within Los Arcos National Park, accessible only by boat. The site features shallow reefs situated near cliffs, with depths ranging from 3 to 15 metres and an average depth of 8 metres. Conditions are generally suitable for beginners, with mild currents and visibility fluctuating between 4 and 24 metres. Water temperatures vary throughout the year, ranging from 23C to 30C. Divers and snorkellers should be aware of sharp coral present in the area. Facilities available at the location include a cafe, guided tours, and equipment rental services.

Quimixto Rocky Edge is a reef site located in Los Arcos National Park, accessible only by boat. The site features a varied underwater topography along the eastern rocky edge of the beach. Conditions at this location are variable, and snorkelers should be aware of potential hazards including sharp coral and surf. Water temperatures range from 24C to 30C throughout the year. The site is suitable for beginners and offers a snorkel rating of 3 out of 5. Facilities available in the area include a cafe and guided tours.

Playa Isabel is a reef site located south of the main Yelapa bay near Chimo. The site features a rocky perimeter that provides a more intimate environment with reduced boat traffic compared to the main beach. Snorkellers can explore depths ranging from 2 to 10 metres, with an average depth of 6 metres. Conditions vary, with visibility typically between 9 and 30 metres and mild currents. Access is available from both shore and boat. The site is suitable for beginners, though visitors should be aware of potential hazards including jellyfish and surf. Parking facilities are available nearby.

Colomitos Beach is a sheltered inlet within Los Arcos National Park, recognised as one of the smallest beaches in Mexico. The site features a reef environment suitable for beginners, with water temperatures ranging from 24C to 30C throughout the year. Divers and snorkellers can access the site from both the shore and by boat. The topography consists of a small beach leading into calm waters, with rocky edges providing the primary structure for the reef. Visitors should be aware of sea urchins present in the area. The site is well-regarded for snorkelling, offering a sheltered environment for underwater exploration.

Punta Mismaloya in Los Arcos National Park offers a diverse underwater environment featuring natural reef, artificial reef structures, a wreck, and a drop-off reaching 40 metres. With an average depth of 18 metres, the site is suitable for beginners, though divers should monitor their depth carefully near the drop-off. Visibility ranges from 5 to 10 metres, and water temperatures fluctuate between 21 and 29 degrees Celsius. Access is available via boat or shore, with the latter requiring navigation through a surf zone. Divers should be aware of potential strong currents, boat traffic, and sharp coral. On-site facilities include parking, a cafe, and equipment rental.

Pizota is a reef site located near the village of Chimo, accessible only by boat. The area features a coastline with mild currents, though visitors should be aware of potential jellyfish and strong current hazards. Water temperatures fluctuate between 24C and 30C throughout the year. Species recorded around this area include wrasses, Sally Lightfoot crabs, jewel morays, king angelfish, threebanded butterflyfish, moorish idols, porcupinefish, groupers, guineafowl puffers, razor surgeonfish, pufferfish, sea stars, and various crabs. A cafe is available for visitors. This site is suitable for beginners and offers a peaceful environment for snorkelling.

Camion hundido in Los Arcos National Park is a shallow shore-entry dive site located near Puerto Vallarta. The site features a consistent depth of 3 metres, providing a calm environment suitable for new divers to practise buoyancy. Conditions are generally mild with visibility ranging from 5 to 10 metres. Water temperatures fluctuate between 24 and 30 degrees Celsius throughout the year, typically requiring only a thin wetsuit or skin suit. As a shore-entry location, it offers an accessible experience without the need for boat transport. Divers should confirm local access points and bring their own equipment and supplies before arrival.