Chachacual West point is a reef and canyon site located in Bahia San Agustin, Mexico. The site features underwater channels and reaches depths between 8 and 25 metres, with an average depth of 15 metres. Access is by boat only. Divers and snorkellers can encounter various marine life, including very common wrasses, common razor surgeonfish, and uncommon species such as king angelfish, barberfish, groupers, triggerfish, threebanded butterflyfish, guineafowl puffer, and gorette. Cortez angelfish, pufferfish, rock cod, and sea chub are occasionally recorded. Conditions are generally mild, though visitors should be aware of potential jellyfish and sharp coral. The site is suitable for beginners.

Shark Cove in Bahia San Agustin is a reef and wall site located 500 metres from shore. The topography features underwater pinnacles, channels, and coral formations. Divers can expect depths ranging from 8 to 30 metres, with an average depth of 18 metres. Conditions are generally mild, with visibility between 10 and 25 metres and water temperatures consistently between 26 and 30C. Access to this site is by boat only. The site is suitable for beginners and supports night diving. Hazards at this location include sharks.

Jicaral is a reef and wall site located in Bahia San Agustin, Mexico, offering a varied underwater topography for both divers and snorkellers. The site is accessible by boat only and is suitable for beginners, with depths ranging from 2 to 18 metres. Conditions are generally mild, with currents remaining gentle throughout the year. Water temperatures are consistent, fluctuating between 27C and 30C. Divers and snorkellers should be aware that sharks are present at this location.

La India is a reef site located in Bahia San Agustin, Mexico. The site features depths ranging from 1 to 20 metres, with an average depth of 8 metres. Divers typically experience mild currents and visibility between 10 and 25 metres. Water temperatures remain consistent throughout the year, ranging from 27 to 30 degrees Celsius. Access to the site is primarily by boat, though it can also be reached from the beach. The site is suitable for beginners, with a typical dive duration of 45 minutes. Divers should exercise caution regarding sharp coral present at the site.

Whale Rock in Bahia San Agustin is a marine site featuring a combination of reef and canyon topography. Located 500 metres from the shore, the site requires boat access and is suited for intermediate divers. Depths range from 10 to 30 metres, with an average depth of 18 metres. Divers should be prepared for moderate currents and potential surge. Visibility typically fluctuates between 10 and 25 metres. Water temperatures are warm, generally between 26 and 30 degrees Celsius, though thermoclines may occur. Hazards at this location include strong currents, surge, sharp coral, stonefish, and sharks. Typical dive times at this site are approximately 50 minutes.

Carrizalillo is a reef site located in Bahia San Agustin, Mexico, offering an accessible experience for beginners. The site features a coral plate at depths ranging from 5 to 12 metres. Divers and snorkellers can expect mild currents and visibility between 5 and 8 metres. Water temperatures are warm, consistently between 27C and 30C throughout the year. Entry is via the shore. Facilities available at the location include a cafe, showers, and toilets. Potential hazards at this site include jellyfish, rip currents, and sea urchins.

Augustin Beach in Bahia San Agustin is a shore-entry reef site suitable for beginners. Divers can expect a consistent average depth of approximately 7 metres. Conditions are generally mild, with water temperatures ranging from 28C to 30C throughout the year. The site is supported by local facilities including a cafe, equipment rental services, and guided tours. As a shallow reef environment, it offers accessible conditions for those looking to explore the local marine topography. The site has been recorded in diving logs since 2005.

St. Agustin Island East is a reef site located in Bahia San Agustin, Mexico. The topography features a bottom contour that allows divers to navigate from depths of 30 metres up to shallower sections featuring coral. Access to this site is by boat only. Conditions are generally mild, though divers should remain aware of boat traffic and depth limits. The site is suitable for beginners and offers a consistent water temperature ranging between 26C and 30C throughout the year. The dive profile typically follows the island's northern side, transitioning from deeper water towards the reef shallows.