Research Reef in La Union, Philippines, is a marine reef site featuring varied topography, including swim-throughs and channels. Divers can explore depths ranging from 3 to 25 metres, with an average depth of 20 metres. The site is accessible only by boat and is suited for intermediate divers. Conditions are generally favourable, with mild currents and visibility ranging from 15 to 50 metres. Water temperatures remain warm throughout the year, typically between 28C and 31C. The reef structure supports a variety of hard and soft corals, providing habitat for diverse reef fish and invertebrates typical of the region.

Ocean Deep in La Union, Philippines, is a marine site featuring both natural reef and artificial reef structures. Divers can expect a consistent depth of 12 metres, making it a suitable location for beginners. Access is via a shore entry, with mild currents typically encountered during the 45-minute dives. Water temperatures remain warm throughout the year, ranging from 28C to 31C. On-site facilities include air fills, equipment rental, a dive shop, guided tours, parking, toilets, showers, changing rooms, and a rinse station. Divers should be aware of potential hazards including sea urchins and sharp coral when navigating the reef environment.