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.

Sweetlips Corner is a deep reef and wall site located in Puerto Galera. The topography consists of a wall and reef structure ranging from 40 to 60 metres in depth, with an average depth of 30 metres. Access is by boat only. Divers encounter mild currents, which allow for navigation along the wall. Visibility at the site fluctuates between 10 and 30 metres. Due to the significant depth, this site is suitable for advanced divers only. Divers should plan gas and bottom time conservatively and brief their buddy on the ascent profile before entering the water.

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.

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.

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.

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.

Montani Bay is a muck dive site located in Puerto Galera, Philippines. Situated in a sheltered bay approximately 200 metres from the shore, the site is protected from currents, making it suitable for beginner divers. The topography consists of a muck bottom, which is ideal for macro photography. Dives typically last 45 minutes at depths ranging from 5 to 18 metres, with an average depth of 10 metres. Visibility at the site varies between 5 and 15 metres. Access to the site is by boat only. Night diving is available at this location.

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.