A small Sorsogon town on the Bicol Peninsula famous for seasonal aggregations of whale sharks ('butanding'), encountered by snorkel only under strict Butanding Interaction Officer rules. The region's scuba diving centres on the nearby Ticao Pass, whose Manta Bowl seamount hosts the largest reef-manta aggregation in the Philippines.
Destination info
Conditions, highlights, and the resident marine life.
Conditions
Water and air temperature across the year.
WaterAirDryShoulderWet
Description
Donsol earned the nickname 'Whale Shark Capital of the World' after a 1998 sighting put it on the map, and it now sits inside the Ticao-Burias Pass Protected Seascape, the Philippines' second-largest marine protected area (414,244 ha, declared 22 June 2018). From roughly November to June, plankton blooms fed by the Donsol River draw whale sharks (Rhincodon typus) into Donsol Bay; the encounter is a regulated snorkel-and-swim 'interaction', NOT a scuba dive. Boats carry a trained Butanding Interaction Officer (BIO) who spots the animals and enforces the rules (max 6 swimmers per shark, one boat per shark, 3 m minimum distance, no touching, no scuba or motorised propulsion). Serious scuba diving lies ~30 km south across Ticao Pass, the strait between Ticao Island and the Bicol mainland. Its centrepiece is Manta Bowl, a seamount that rises to about 14-23 m and functions as a reef-manta (Mobula alfredi) cleaning station; LAMAVE photo-ID work has logged 284 individual reef mantas here, the largest known aggregation in the country. Ticao Pass currents run hard (sometimes over 3 knots), so Manta Bowl is a reef-hook drift dive for experienced divers, while the walls and reefs off San Miguel Island at Ticao's northern tip offer more sheltered, life-rich diving. Diving is day-boat (and resort/liveaboard) based, with Donsol increasingly used as the jump-off town.
Highlights
What makes this dive worth the trip.
The Donsol whale-shark encounter is a snorkel-only 'interaction', never a scuba dive: boats carry a trained Butanding Interaction Officer (BIO) who spots the animals and enforces the rules — a maximum of six swimmers and one boat per shark, a 3 m minimum distance, no touching, and no scuba or motorised underwater propulsion.
Whale sharks gather in Donsol Bay roughly November to June, peaking February to May, when plankton blooms fed by the Donsol River and the productive Ticao-Burias Pass draw them in to feed. The Ticao-Burias Pass holds the largest whale-shark aggregation in Southeast Asia; photo-ID documented 614 individual whale sharks (about 49% of the Philippines' known population) between 2006 and 2020.
Manta Bowl, a seamount in Ticao Pass, is the largest reef-manta-ray (Mobula alfredi) aggregation in the Philippines: LAMAVE photo-identification recorded 1,710 manta sightings and 284 individual reef mantas at the site between 2004 and 2020. Reef mantas are seen year-round at its cleaning stations.
Marine life
33 species you’re likely to encounter on a dive here.
Dive sites
5 signature sites at this destination.
Manta Bowl
A seamount in the middle of Ticao Pass, roughly 7 km off the northern coast of Ticao Island, rising from much deeper water to a plateau of about 14-23 m. Coral and rocky outcrops on the bowl host cleaner wrasse, forming cleaning stations (locally named Circus, Thandy's Rock, Pandy's and others) that reef manta rays (Mobula alfredi) visit daily — LAMAVE has identified 284 individual reef mantas here, the largest aggregation in the Philippines. Currents are strong (sometimes over 3 knots), so divers descend with a dive plan set at the surface and reef-hook onto the bottom to watch the mantas, with occasional whale sharks, thresher and hammerhead sharks passing through.
14–23 madvancedDay boatStrongVisibility 10–25 m
R.A.C. Point
A reef site on the Manta Bowl shoal, named after Rico A. Calleja, the diver credited with finding Manta Bowl. Shallower than the bowl itself at about 14 m, it offers shelter from the worst of the Ticao Pass current and is a favourite among divers. Healthy reef life includes surgeonfish, fusiliers, butterflyfish and damselfish over the coral, with mantas sometimes drifting across from the nearby cleaning stations.
8–18 mintermediateDay boatModerateVisibility 10–25 m
Parola (San Miguel Island)
Found at the tip of San Miguel Island, off the northern end of Ticao Island, where currents converge near the lighthouse ('parola' is Filipino for lighthouse). Moderate to strong currents bring in sharks and rays that surf the flow, and divers work through a series of ledges and changing depths down to around 20 m, taking in different layers of marine life along the wall.
10–20 mintermediateDay boatModerateVisibility 10–25 m
Bobby's Wall (San Miguel Island)
On the northern side of San Miguel Island, a varied site combining a sandy slope, ledges, a reef wall, steep drop-offs, rock formations and a sheer wall with caverns and overhangs. Much of the area is limestone, and the mix of terrain shelters reef fish, moray eels, scorpionfish, nudibranchs, cuttlefish and frogfish, making it a reliable, more sheltered alternative to the exposed Manta Bowl.
8–25 mintermediateDay boatLightVisibility 10–25 m
Great Wall of Ticao
A near-vertical wall off Burubangkaso Island in the Ticao area, where rock formations break the surface and the wall plunges into very deep water (over 300 m). The face is dressed in soft and hard corals and gorgonians, with nudibranchs, tunas, cuttlefish and reef fish patrolling the drop-off — a scenic wall dive that contrasts with the open-water, big-animal character of Manta Bowl.
10–30 mintermediateDay boatModerateVisibility 10–25 m
Where to dive & stay
Local dive centers, resorts, and hotels.
Featured operators coming soon
Verified dive centers, resorts, and hotels around Donsol will list here — pricing, photos, and direct contact.
