Lobster Rock is a deep reef site located off Cocos Island, Costa Rica, requiring boat access. The topography ranges from 12 to 33 metres, with an average depth of 20 metres. Divers encounter moderate currents and frequent thermoclines that can cause abrupt temperature drops. Marine life includes Whitetip Reef sharks, Panamic Green Morays, Yellow-edged Morays, and Spiny Lobsters. Wrasses are common, alongside various reef fish such as Pacific Trumpetfish, pufferfish, triggerfish, groupers, and Redlip Parrotfish. Due to surge, sharp coral, and strong currents, this site is strictly for advanced divers. Visibility typically ranges between 15 and 30 metres. Guided tours are strongly recommended to navigate the shifting current patterns around the rock.

Manuelita Garden is a reef site located off Cocos Island, Costa Rica, offering diving at depths between 15 and 25 metres. With an average depth of 18 metres and mild currents, the site is suitable for intermediate divers. Visibility typically ranges from 20 to 35 metres, though it can occasionally drop to 5 metres. Access is by boat only, and the site is well-suited for night dives. Water temperatures remain between 27 and 29 degrees Celsius. Divers should be aware of the presence of sharks and maintain close proximity to their guide during dives.

Isla Pajara is a reef, wall, and pinnacle system located off Cocos Island. This site is suited for advanced divers due to strong, unpredictable currents and surge. Divers typically explore between 15 and 30 metres, with visibility ranging from 10 to 30 metres. Thermoclines are common below 20 metres, often requiring a full wetsuit. Marine life includes whitetip reef sharks, spotted eagle rays, yellow-edged and Panamic green morays, king angelfish, wrasses, groupers, redlip parrotfish, triggerfish, bluefin trevally, moorish idols, rock cod, and various pufferfish. Boat access is required for this site, which also supports night diving. Divers should maintain close proximity to their guide and establish clear drift abort signals.

Silverado is a pinnacle and reef site located off Cocos Island, Costa Rica, offering depths between 10 and 15 metres. Accessible only by boat, this site features a moderate current that requires careful navigation around the pinnacle structure. Visibility varies significantly from 5 to 30 metres. Divers may encounter species including wrasses, yellow-edged morays, whitetip reef sharks, Panamic green morays, guineafowl puffers, Pacific trumpetfish, spotted boxfish, groupers, redlip parrotfish, triggerfish, spiny lobsters, sea stars, and combers. Water temperatures remain warm, ranging from 27 to 30 degrees Celsius. Due to the moderate current and potential for shifting directions, this site is best suited for intermediate divers.

Isla Cascara is a reef site located within the Cocos Island marine reserve, accessible only by boat. The site features a reef and cave system with an average depth of 25 metres. Water temperatures are warm, typically ranging between 27 and 30 degrees Celsius, though thermoclines can cause temporary drops. Visibility fluctuates between 10 and 30 metres, and divers should be prepared for variable conditions. While currents are generally mild, the site is subject to surge and swell. Night diving is permitted, offering an alternative perspective of the reef structure. Divers should exercise caution regarding sharp coral and rock formations while navigating the area.

Alcyone is a seamount pinnacle located off Cocos Island, accessible only via liveaboard. The site features depths ranging from 25 to 36 metres, with an average depth of 27 metres. Divers experience strong, shifting currents and visibility between 15 and 35 metres. Water temperatures typically range from 25 to 28C, though thermoclines can cause temperatures to drop to 18 to 22C below 25 metres. Due to the depth, strong currents, and potential for surge, this site is suited for advanced divers. Divers must follow guide briefings closely and maintain awareness of potential hazards including cold water, deep conditions, and entanglement risks.

Dirty Rock is a deepwater pinnacle system located at Cocos Island, Costa Rica. The site features a reef and pinnacle structure with depths ranging from 29 to 35 metres. Divers experience strong, consistent currents and surge, requiring advanced certification and experience with exposed, high-current environments. Visibility is typically 30 metres. Water temperatures range from 25 to 28C, though thermoclines are common and can cause temperatures to drop significantly at depth. Access is by boat only, and divers must monitor depth and surface boat traffic closely. Due to the depth and current conditions, this site is suitable only for advanced divers.

Bajo Alcyone is a deep-water pinnacle located off Cocos Island, Costa Rica. This advanced dive site features a reef structure with working depths between 25 and 40 metres, averaging 30 metres. Divers must access the site via boat, as it is located 550 kilometres from shore. Conditions are challenging, characterised by strong currents and visibility ranging from 15 to 35 metres. Thermoclines are common, particularly during the wet season, causing abrupt temperature drops. Due to the depth and current, this site requires precise gas management and buoyancy control. Divers should time their descent for slack water or the early push of current to manage bottom time effectively.