Cadena is a reef site located off Tambor on the Nicoya Peninsula, accessible only by boat. The site is suitable for beginners, offering a maximum depth of 16 metres and mild currents that assist with buoyancy control. Water temperatures remain warm throughout the year, ranging between 26 and 29 degrees Celsius. Visibility at the site is variable, so conditions on the day of your dive will influence your experience. As facilities are not confirmed at this location, divers should ensure they bring all necessary equipment from their point of departure.

Tiburon is a boat-access reef located 4600 metres off the coast of Tambor, Costa Rica. The site features depths ranging from 10 to 15 metres, making it suitable for beginner divers. Divers can expect water temperatures between 26 and 29 degrees Celsius, though thermoclines may occur. Visibility is variable, ranging from 3 to 15 metres. The site is subject to surge and currents, which can intensify; therefore, staying close to the boat and a local guide is recommended. The habitat supports a variety of reef fish and invertebrates typical of the region. Facilities including air fills, equipment rental, and guided tours are available for visitors.

La Pared Pinaculo, located off the Nicoya Peninsula, features a combination of wall and pinnacle topography. The site is suitable for beginner divers, with depths ranging from the surface down to 15 metres. Access is by boat only, and divers should be prepared for moderate currents that can occasionally strengthen. Water temperatures remain consistent between 26 and 29 degrees Celsius throughout the year. Due to variable visibility, maintaining close proximity to your buddy and dive leader is recommended. Divers must manage buoyancy carefully and remain aware of their surroundings at all times while navigating the underwater terrain.

El Secreto 2 is a drift dive site located off the Nicoya Peninsula near Tambor. The reef reaches a maximum depth of 18 metres and is defined by strong, dynamic currents that require solid buoyancy control. Due to these conditions, the site is suited for intermediate divers and above. Access is exclusively by boat. Visibility at the site is highly variable, ranging from excellent to limited depending on the day. Water temperatures remain consistent throughout the year, typically between 26 and 28 degrees Celsius. Divers should consult with their local operator regarding current conditions and tidal cycles before planning a dive.

El Secreto is a reef drift dive located off Tambor on the Nicoya Peninsula. This site is defined by strong currents that carry divers along the reef structure from shallow depths down to 20 metres. Due to the strength of the current, this site is suited for intermediate divers who possess solid buoyancy control. Visibility varies significantly, ranging from 8 to 25 metres depending on daily conditions. Access is by boat only, and divers must remain vigilant regarding boat traffic and propellers upon surfacing. Hazards include sharp coral, rocks, and sea urchins found throughout the reef area.

Located off the coast of Tambor, this wreck sits at depths between 16 and 23 metres, with an average depth of 18 metres. Access is strictly by boat, as the site is situated 10 kilometres from shore. Divers should anticipate moderate currents and variable visibility ranging from 3 to 14 metres, which can shift rapidly. Due to these conditions and the depth, the site is reserved for advanced divers. Guided tours are recommended to assist with navigation and orientation around the structure. The wreck provides a hard substrate in the marine environment, though specific species sightings are not recorded for this location.

Rio Lajas is a reef site located off the Nicoya Peninsula, accessible only by boat. The topography features a reef structure that reaches depths of 16 metres, though some areas extend to 35 metres. Divers should expect variable visibility and moderate to strong currents, including potential rip currents. The site is suited for intermediate divers who can manage buoyancy and current awareness. Hazards include surf at the entry, entanglement risks, sharp coral, and the presence of crocodiles in the nearby river zone. Stonefish may also be present on the reef. Divers should maintain a conservative approach and ensure their boat operator is experienced with local conditions.

La Chancha is a reef site located off Tortuga Island, Costa Rica, offering diving at depths between 15 and 25 metres. Access is exclusively by boat, and divers should be prepared for moderate currents that can become more pronounced in the deeper sections of the reef. Visibility at the site typically ranges from 9 to 15 metres. Water temperatures remain consistent throughout the year, fluctuating between 25 and 28 degrees Celsius. Due to the presence of rip currents, strong currents, and surface surf, this site is recommended for intermediate divers comfortable with moving water. Always coordinate boat entry and exit procedures with your skipper to manage surface conditions.