Mar Chiquita is a shallow shore-entry reef located on the north coast of Puerto Rico. The site reaches a maximum depth of 15 metres with an average of 8 metres, offering a manageable environment for beginner divers. Water temperatures remain between 27 and 30 degrees Celsius throughout the year. Divers should exercise caution during entry due to sharp rocks and the presence of sea urchins on the seabed. The site is exposed to the north, meaning moderate currents and surge are common. Divers must monitor conditions closely, as rip currents can develop quickly. Facilities including parking, toilets, and a dive shop are available on site.

Los Tubos on the North Coast of Puerto Rico is a reef and artificial reef site featuring a sandy bottom that fluctuates between 5 and 13 metres. The area has historical significance as a former colonial merchant boat anchorage, where remnants of period anchors remain visible. Divers can access the site via a former boat ramp. Conditions are subject to strong currents and surf, making this an intermediate-level site. Visibility ranges from 5 to 30 metres, and water temperatures remain warm throughout the year, peaking at 30C in September and October. Facilities available at the site include parking, showers, changing rooms, a cafe, and toilets.

Cerro Gordo is a shallow shore-entry reef located on the north coast of Puerto Rico. The site ranges from 1 to 9 metres in depth, with an average of 6 metres, making it suitable for beginners and snorkellers. Visibility typically spans 5 to 10 metres, and currents are generally mild. Water temperatures remain between 27 and 30 degrees Celsius throughout the year. The site is also accessible for night diving. Divers should remain aware of surge and potential rip currents near the entry point. Hazards include lionfish, stonefish, sea urchins, and sharp coral. On-site facilities include parking, toilets, and showers to assist with post-dive rinsing.

La Reja is a shallow reef located on the North Coast of Puerto Rico, offering shore access for intermediate divers. The site features a very shallow profile, with depths typically ranging from 1 to 2 metres. Visibility is generally good, between 10 and 30 metres, and water temperatures remain warm throughout the year. Divers must navigate a shore break during entry and should be cautious of sharp coral, sea urchins, and potential rip currents. Protective footwear is recommended to prevent injury. While specific marine life sightings at this exact site are not confirmed, species recorded around this area include various reef fish, crustaceans, and invertebrates.

La Trampa de Buzo is a reef site located on the north coast of Puerto Rico. The topography drops rapidly, with depths ranging from 20 to 35 metres. Divers should be prepared for strong currents, which are a defining feature of this location and require solid buoyancy control and drift diving experience. Visibility varies between 10 and 30 metres. Water temperatures remain warm, typically between 27 and 30C throughout the year. Access is via shore entry, though caution is advised regarding boat traffic and surf conditions. Species recorded around this area include blue tang, wrasses, Spanish hogfish, black durgeon, and various snails.

La Cueva Submarina in Aguadilla is a cave and cavern system situated at a depth of 25 metres. Divers access the site via a shore entry, navigating mild currents to reach the reef and overhead environment. Visibility at the site ranges from 10 to 30 metres, with water temperatures remaining between 27 and 30 degrees Celsius throughout the year. Due to the overhead environment and the consistent depth, this site is suited for intermediate divers with appropriate certification. Divers should exercise caution regarding entanglement risks and remain aware of potential hazards including lionfish, stonefish, and jellyfish. Carrying primary and backup torches is recommended for the cave sections.

Shacks Beach in Aguadilla, Puerto Rico, features a reef and cave system ranging from 3 to 11 metres in depth. This site is suitable for intermediate divers and snorkellers, offering a shore entry that requires careful timing due to surf and shore break conditions. Divers should be aware of strong currents and rip currents throughout the area. The topography includes overhead environments within the caves, necessitating appropriate certification for entry. Buoyancy control is essential to avoid contact with sharp coral and sea urchins. Facilities at the site include parking and a cafe, allowing visitors to assess water conditions before entering.