Southwest
Conditions & tides
Scored by DiveConnect's site-physics model
Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.
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About this site
Southwest, also called Southwest Pinnacle, is a chain of submerged pinnacles about 10 km offshore from Koh Tao. The pinnacles are carpeted in anemones and soft coral and are dived roughly between 7 and 30 metres.
Fusiliers, jacks and grouper school around the top, and bull sharks turn up occasionally. The site is exposed, so it can run current, and early morning gives the best visibility and the quietest water.
Marine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Echinopora lamellosaReported here · unconfirmed
Harlequin SweetlipsPlectorhinchus chaetodonoidesReported here · unconfirmed
Tombstone CoralCoeloseris mayeriReported here · unconfirmed
Plate & Pillar CoralPorites rusReported here · unconfirmed
Pentagonal honeycomb coralFavites pentagonaReported here · unconfirmed
Black-margined NudibranchDoriprismatica atromarginataReported here · unconfirmed
Broadclub CuttlefishAscarosepion latimanusReported here · unconfirmed
Striped SurgeonfishAcanthurus lineatusReported here · unconfirmed
Cauliflower CoralPocillopora verrucosaReported here · unconfirmed
FusilierFusilierReported here · unconfirmed
Bull SharkCarcharhinus leucasReported here · unconfirmed
GrouperGrouperReported here · unconfirmed
Durable tips from divers — access, hazards, marine life, facilities. For day-of conditions, use the report tool in the conditions card above.
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