The B-29 Aircraft Wreck in Aguadilla, Puerto Rico, is a deep-water site resting at a maximum depth of 38 metres. Accessible only by boat, this site is located 4000 metres from the shore and is suited for advanced divers due to the significant depth and strong currents. The wreck consists of scattered remains, including engine parts and fusel arches set against a sandy bottom with occasional rocks. Visibility at the site ranges from 1 to 30 metres, and water temperatures remain warm throughout the year, typically between 27C and 30C. Nitrox is recommended for this dive to maximise bottom time.

The MV Ambar is a deep wreck located off the coast of Aguadilla, Puerto Rico, reaching depths of up to 49 metres with an average depth of 45 metres. This site is strictly for expert divers, requiring advanced, deep, and technical certifications due to the overhead environment and mandatory decompression requirements. Access is by boat only. Divers encounter moderate to strong currents, which necessitate careful planning of bottom time and penetration schedules. Visibility is variable, ranging from 3 to 18 metres. Given the depth and potential for strong currents, divers must maintain high situational awareness throughout the 30-minute typical dive profile.

El Natural in Aguadilla is a shore-entry reef site suitable for beginners, offering depths between 3 and 20 metres. The topography features both shallow areas and a drop-off. Divers can observe a variety of marine life, including common Caribbean Ocean Surgeonfish, Blue Tang, and various wrasses. Less frequently encountered species include French Angelfish, Spotted Moray, Spotted Scorpionfish, Foureye Butterfly Fish, groupers, Spanish Hogfish, Yellowtail Parrotfish, Smooth Trunkfish, and Caribbean Sharpnose Puffer. Christmas tree worms and various sponges and invertebrates are also present. Conditions are generally mild, though divers should be aware of sharp rock hazards during entry and exit.

Crash Boat in Aguadilla offers a varied underwater environment combining natural reef with artificial structures. Suitable for both divers and snorkellers, the site features depths ranging from 1 to 13 metres with an average of 8 metres. Entry is from the shore, and the area experiences mild currents. Visibility is variable, ranging from 3 to 18 metres, and is often best during early morning hours. Water temperatures remain warm throughout the year, between 27C and 30C. Divers should be aware of sharp coral and potential low visibility. Facilities including parking, toilets, showers, and equipment rental are available at the site.

Crash Boat Piers in Aguadilla offers a diverse underwater environment featuring a combination of natural reef, artificial structures, and wreck remains. The site spans depths from 1 to 18 metres, with an average of 9 metres, making it suitable for beginner divers. Visibility typically ranges between 10 and 30 metres, while water temperatures remain warm throughout the year. Divers should be aware of potential hazards, including boat traffic, surf, and variable currents. Shore entry is available, though caution is required due to the shore break. Facilities including parking, toilets, and showers are provided on site to support divers.

Muelle de Azúcar is a shallow wreck and artificial reef located in Aguadilla, Puerto Rico. Suitable for beginners, the site ranges from 0 to 12 metres in depth with an average of 6 metres. Divers and snorkellers access the site from the shore, though caution is required due to potential shore breaks. Visibility is typically 12 metres with mild currents. The structure provides an overhead environment, presenting risks of entanglement and sharp surfaces. Species recorded around this area include French angelfish, spotted moray, blue tang, and various wrasses. Night diving is possible at this location, which features nearby parking facilities.

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.

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.