Big Dos Amigos is a deep pinnacle and reef site located off Cocos Island, Costa Rica. Designed for advanced divers, the site features depths between 20 and 40 metres with an average of 25 metres. Strong currents and surge are defining characteristics, requiring confident drift technique and buoyancy control. Visibility varies from 10 to 30 metres. Access is strictly by boat, and the site is not suitable for snorkelling. Divers must be prepared for deep water conditions and potential cold thermoclines. Always carry a surface marker buoy, as currents can displace divers from the boat during ascent.

Punta Maria is a high-energy wall and reef site located 500 metres off Cocos Island. This advanced dive features depths ranging from 20 to 36 metres, with an average depth of 25 metres. Divers encounter strong currents, surge, and variable visibility between 15 and 30 metres. Thermoclines frequently cause temperature drops within the 25 to 28C range. Due to the exposed nature of the site and unpredictable current shifts, boat entry is required. Divers must possess advanced certification and strong buoyancy control skills to navigate this remote environment. Always confirm conditions with your liveaboard crew and maintain a surface marker buoy for safety during drift dives.

Shark Fin Rock is an exposed oceanic pinnacle located off Cocos Island, Costa Rica. The site features a reef structure dropping from 15 to 40 metres, with an average depth of 25 metres. Divers encounter strong currents and occasional cold thermoclines, requiring advanced skills and solid buoyancy control. Visibility typically ranges between 10 and 30 metres. The site is accessible only by boat, and night diving is available through liveaboard operators. Species recorded around this area include whitetip reef sharks, spotted eagle rays, various moray eels, groupers, and wrasses. Due to the surge, swell, and strong currents, divers must maintain close contact with their guide throughout the 50-minute dive.

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.

Submerged Rock is a deep offshore pinnacle located 1600 metres from the shore of Cocos Island. The site topography features a mix of open-water pinnacle diving and cave sections, with depths ranging from 20 to 42 metres. Divers must be prepared for moderate currents, surge, and overhead environments. Visibility typically fluctuates between 10 and 30 metres. Due to the depth and conditions, this site is strictly for advanced divers with deep certification. Boat entry is required, and divers should remain aware of potential entanglement risks within the structure. Water temperatures generally range from 24 to 27C, though occasional thermoclines can cause temperatures to drop into the low 20s.

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.

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.

Bait Balls is an advanced open-water site located off Cocos Island, Costa Rica. The topography consists of a complex mix of reef, wall, and pinnacle formations ranging from 18 to 40 metres in depth. Divers encounter strong, unpredictable currents, requiring high proficiency in buoyancy control and current management. Visibility varies between 10 and 30 metres. Water temperatures typically range from 24 to 27 degrees Celsius, though thermoclines frequently cause temperatures to drop significantly below 25 metres. Due to the depth profile and current conditions, Nitrox certification is required. Boat access is mandatory, and the use of a surface marker buoy is essential for safety.