KwaZulu-Natal, South Africa
Aliwal Shoal
Fossilised sandstone reef 5km off Umkomaas on the KwaZulu-Natal coast, reached by surf launch, with a winter ragged-tooth shark aggregation and a well-established baited shark diving industry.
- Tiger shark
- Bull shark
- Sharks
- Strong current
Best season
Best Jun–Nov
Minimum cert
Advanced
Water
19–27°C
Current
strong
Season
When this place works
Runs year-round with no closure, but the surf launch means individual days are lost to sea state far more often than at a sheltered destination. The two headline seasons are opposed: ragged-tooth Jun-Nov in cold water, tiger sharks Nov-Mar…
Why dive here
What this place is known for
01sharkRagged-tooth shark aggregation
June to November, unbaited. Sand tiger sharks (called ragged-tooth or 'raggies' locally) gather on the reef and in the gullies, particularly at Cathedral. They look ferocious and are placid. The aggregation is the thing that made Aliwal's reputation, and it…
Seasonality — offoffoffoffshoulderpeakpeakpeakpeakpeakpeakoff
- 02shark
Baited blacktip and tiger shark dives
BAITED, cage-free. A baited drum or ball is deployed and divers drift freely with it in blue water; up to 50 oceanic blacktips around a single bait ball is reported. Tiger sharks have been dived here since around 2002. Cage diving exists separately in…
03reefLow confidenceFossilised dune reef
Under-mentioned relative to the sharks. Aliwal is a drowned sandstone dune with caves, gullies and swim-throughs, carrying soft coral, potato bass, morays, pipefish and rays. Divers who come only for the shark dives skip it.
Marine life
Twelve-month species timelines
Jun-Nov, though the operator notes climate variation has been extending their presence beyond the traditional window. Unbaited: they are on the reef because they aggregate there, not because anyone…
Year-round. Up to 50 animals around a bait ball. The species is present regardless; the density is manufactured.
Nov-Mar, warm-water months. Dived here on baited drums since roughly 2002.
Known locally as Zambezi shark. Year-round, though the dedicated bull shark diving in this region is at Protea Banks rather than Aliwal.
Passing on the KwaZulu-Natal migration through the southern winter. Surface and boat sightings; not an in-water product.
Conditions
What the water is like
Water temp
19–27°C
15°C — 32°C
Visibility
5–25 m
0 m — 40 m
Current
strong
mild — strong
Thermoclines
Expected
likely
Minimum certification — Advanced
Low confidenceThe distinctive hazard is getting there. Access is by rigid inflatable surf launch through the breakers at Umkomaas, which is genuinely rough, occasionally aborted, and unlike anything most divers have done. Once out, the shoal carries…
Entries — boat
Logistics
How people dive it
3-7 days
scuba
Operators in Umkomaas, roughly an hour south of Durban. Baited shark dives and reef dives are sold as separate products; do not assume one…
5-10 days
scuba
Sardine Run trips are a separate dedicated product in June-July, run as a chase along the coast from purpose-fitted boats, often further…
Operators
Who to book with
Loading operators…
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