One of the remotest dive destinations on Earth, this volcanic British Overseas Territory in the mid South Atlantic hosts the world's only known aggregation of adult male and female whale sharks in roughly equal numbers, plus year-round Chilean devil rays, endemic reef fish and superb shallow wrecks.
Conditions, highlights, and the resident marine life.
Water and air temperature across the year.
St Helena rises from the deep South Atlantic some 1,900 km west of Africa, and its entire 200-nautical-mile zone has been an IUCN Category VI Marine Protected Area since 2016. Diving centres on the sheltered leeward (northwest) coast within a short boat ride of Jamestown: volcanic drop-offs, caves and swim-throughs carpeted in endemic orange cup coral, the shore-accessible SS Papanui wreck in James Bay, and the deeper RFA Darkdale war grave. Warm-temperate water runs roughly 19-26 C across the year, visibility is frequently 20-30 m or better, and the marquee season is December-May, when adult whale sharks aggregate (peaking January-March; in-water encounters are snorkel-only under licensed-operator rules). Around a dozen shallow-water fish found nowhere else - including the St Helena butterflyfish and Melliss's scorpionfish - make even easy reef dives feel distinct. Be honest with expectations on logistics: access is a once-weekly Airlink flight from Johannesburg (plus seasonal Cape Town service), there are only a handful of small dive operators, and there is no recompression chamber on the island, so diving is kept conservative.
What makes this dive worth the trip.
25 species you’re likely to encounter on a dive here.
6 signature sites at this destination.
A 130 m steamer that caught fire and was scuttled in James Bay in 1911, resting upright in shallow water a short swim from the Jamestown seafront steps - one of the easiest and most atmospheric shallow wreck dives anywhere, also snorkellable. Boilers, ribs and plating shelter dense reef life.
A long volcanic ledge on the northwest coast riddled with caves and swim-throughs, considered one of the most biodiverse spots on the island and a regular night-dive venue; the small wreck of the Bedgellet, scuttled in 2001 as an artificial reef, lies close by in 10-20 m. Site position is approximate.
A rock pinnacle off the west coast with a roughly 15 m swim-through, endemic corals and crayfish in the crevices, and seasonal devil rays cruising past. Slightly more exposed than the inshore ledges. Site position is approximate.
St Helena's best-known offshore islet, a seabird colony off the west coast with volcanic boulder slopes and walls from 15 m down to about 30 m - reliable for schooling jacks, seasonal nudibranchs and passing devil rays.
An islet near the island's southwest point, about 20-25 minutes by boat from Jamestown, with dramatic volcanic caves and overhangs sheltering crabs, lobsters and moray eels; devil rays pass in season. Site position is approximate.
Royal Fleet Auxiliary tanker torpedoed by U-68 in October 1941 with the loss of 41 crew, lying largely intact in James Bay at 33-48 m. It is a protected war grave - dived with respect, no penetration, and only within conservative no-decompression limits given the island's remoteness.
Local dive centers, resorts, and hotels.
Verified dive centers, resorts, and hotels around St Helena will list here — pricing, photos, and direct contact.
