Marcos Cave is a deep-water site located off Puerto Galera, Philippines, featuring a combination of cave topography and surrounding reef slopes. Reaching depths of 42 to 50 metres, this site is suited for intermediate divers experienced in deep diving. Access is by boat, and divers should be prepared for moderate currents that can shift with the tide. Visibility at the site varies between 10 and 30 metres. Species recorded around this area include ornate ghostpipefish, giant frogfish, flamboyant cuttlefish, peacock mantis shrimp, various nudibranchs, moray eels, lionfish, harlequin sweetlips, day octopus, and broadclub cuttlefish.

Mamuds Reef is a deep reef site located off Puerto Galera. The topography features a significant slope that drops from 24 metres down to 45 metres. Due to the depth profile, this site is suited for intermediate divers with strong buoyancy control and gas management skills. Divers can expect mild currents and visibility ranging from 10 to 30 metres. Water temperatures remain between 25 and 30 degrees Celsius throughout the year. Access is strictly by boat, as there are no shore entry options available. Divers must maintain constant awareness of their depth gauge to avoid drifting deeper than planned along the reef slope.

Odie's Wall is a rocky wall in Puerto Galera that slopes to a maximum depth of 42 metres. The topography features numerous large gorgonian sea fans in purple and orange, alongside sponges and various cracks and holes. This site is suitable for intermediate divers and requires boat access. Divers should be prepared for moderate currents and exercise caution around sharp coral. Visibility typically ranges between 15 and 30 metres, with water temperatures fluctuating from 26C to 29C throughout the year. Night diving is permitted at this location, with typical dives lasting approximately 40 minutes.

Munting Buhangin Underwater Cave is a unique half-submerged cave situated on the rocky edge of San Antonio Island in Puerto Galera. Snorkellers can access the site by boat and enter through a small opening at water level, navigating through to exit via a hole in the rock ceiling above, depending on tidal conditions. The site is suitable for intermediate snorkellers. Marine life recorded here includes common wrasses and very common azure sea stars. Divers and snorkellers may also encounter uncommon species such as sea kraits, chromodoris and jorunna nudibranchs, cushion stars, hawkfish, cardinalfish, and various snails.

Batangas Channel is a shallow drift dive located 400 metres offshore from Puerto Galera. The site features a distinct topography of undulating plains and twisted rock formations, including mushroom-shaped structures adorned with table corals and green tree corals. Divers encounter a variety of sponge formations across the seabed. Depths range from 8 to 18 metres, with an average of 14 metres. The site is accessible only by boat and is suitable for beginners. Conditions include mild currents and visibility ranging from 10 to 30 metres. Water temperatures fluctuate between 26C and 30C throughout the year. Hazards include sharp coral and stonefish. Night diving is available at this location.

Manila Channel in Puerto Galera offers a versatile dive experience combining reef, drift, and muck diving. Suitable for beginners, the site features a reef slope ranging from 5 to 30 metres, with an average depth of 18 metres. Access is strictly by boat, and while currents are generally mild, they can strengthen, requiring careful monitoring. Visibility typically spans 10 to 30 metres. Divers should maintain neutral buoyancy to avoid contact with stonefish, lionfish, and sea urchins found on the reef. Secure all loose equipment to prevent entanglement during the dive. Water temperatures remain consistent between 26 and 29 degrees Celsius throughout the year.

Coral Gardens 2 in Puerto Galera, Philippines, is a reef site characterised by coral pillars and intricate coral formations. The site features gradual slopes and is accessible by boat. Divers can expect depths ranging from 5 to 22 metres. Conditions vary, with visibility typically between 10 and 25 metres and water temperatures ranging from 26C to 30C throughout the year. The site is suitable for beginners, though divers should be aware of the potential for moderate to strong currents. As a reef environment, the area supports a variety of coral habitats.

Haligi Beach, located on Boquete Island in Puerto Galera, is a reef site accessible by boat. The area is characterised by grainy rice sand and a healthy reef system situated just a few metres from the shore. With water temperatures ranging from 27C to 30C and visibility typically between 15 and 25 metres, the site offers mild current conditions suitable for beginners. It is a frequent stop for island-hopping tours due to the calm water conditions. The site is primarily utilised for snorkelling, providing an accessible environment for observing the local reef habitat.