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.

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 is a boat-access reef located off the Pacific Coast of Mexico. The site features a reef structure that spans depths from 8 to 40 metres, with an average depth of 20 metres. Conditions at the site vary, with visibility ranging from 5 to 37 metres and water temperatures between 21 and 29 degrees Celsius. A mild current typically persists, making the site suitable for beginner divers. Access is strictly by boat, and the site is located approximately 19 kilometres from the shore. A cafe is available on-site for visitors, though divers should plan their trip duration accordingly as the boat journey limits access to other facilities.

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.

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.

Los Arcos National Park features a diverse underwater landscape of reef and cave structures. Divers can explore depths ranging from 6 to 36 metres, with an average depth of 15 metres. Access is strictly by boat to avoid the shore break, and the site is suitable for beginners, though conditions vary. Visibility typically ranges between 6 and 15 metres. Currents can be strong and variable, and divers should remain alert for boat traffic and surge. Night diving is available at this location. Due to the shifting currents and potential for surge, it is recommended to brief thoroughly with a guide and confirm exit points before entry.

Acuario Los Arcos is a diverse marine site within Los Arcos National Park, featuring a complex topography of reefs, walls, caves, caverns, and drop-offs. Reaching depths between 7 and 45 metres with an average of 20 metres, the site is accessible only by boat. Divers should be prepared for moderate currents, surge, and potential overhead environments within the caves and tunnels. Visibility ranges from 5 to 30 metres, and water temperatures fluctuate between 21C and 28C throughout the year. Due to the depth and potential for strong currents and boat traffic, this site is suited for experienced divers. Night diving is permitted at this location.