The Conch

The Conch is an advanced dive site off Sri Lanka's southwestern coast, named for the conch shells that litter the sandy bottom surrounding this underwater formation. Located in the warm Indian Ocean waters between Hikkaduwa and Galle, this site offers experienced divers a varied diving experience combining rocky reef exploration with sand bottom hunting for camouflaged marine life. The underwater topography at The Conch features scattered rock formations rising from a sandy seabed, with the main structure creating a moderate reef system that supports concentrated marine life. The rock formations vary in size from small boulders to larger ridges, creating a heterogeneous landscape that provides different experiences as divers move between formations. The name-giving conch shells scattered across the sandy expanses between rock formations indicate healthy populations of these large gastropods, which are an important indicator species for ecosystem health. The sand patches also harbour other interesting finds, including various species of sea stars, sand-dwelling anemones, and the occasional small ray partially buried in the sediment. The rocky formations support coral growth that is recovering and developing, with branching corals, brain corals, and table corals establishing on favourable surfaces. Soft corals add colour to shaded areas, while sponges and ascidians encrust the vertical rock faces. The structural complexity creates numerous hiding spots for a diverse community of fish and invertebrates. The advanced rating reflects the site's exposure to current and the potential for challenging surface conditions at this relatively offshore location. Experienced divers will appreciate the more adventurous feel compared to the sheltered lagoon sites closer to shore. Marine encounters at The Conch include schooling fish attracted by the current, resident groupers and moray eels within the rock formations, and sea turtles that transit the area. The diversity of habitats, from rock to sand to coral, creates interest throughout the dive. Best conditions occur from November to April during the northeast monsoon season, with visibility of 10 to 20 metres and warm water temperatures around 28 degrees.