Renggis Island
Conditions & tides
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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
Renggis Island is a reef dive site off Tioman Island, Malaysia, known for its resident blacktip reef sharks and regular turtle sightings. It sits on the shallow side of the island and is one of the most frequently used training and refresher sites in the area, with depths ranging from 5 m to 18 m.
The terrain is a reef with clear water and a maximum depth of 18 m, making it straightforward to navigate. The shallow profile and calm, light-current conditions suit new divers and those returning to the water after a break, and the site is commonly used for Open Water training and certification dives.
Marine life at Renggis includes blacktip reef sharks in the shallows, hawksbill and green turtles, and a variety of reef fish. The site sits within Tioman's Marine Park, and a Marine Park fee is required before diving.
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Diving is seasonal: the site is accessible from March through October, with the northeast monsoon closing most diving from November to early March. Water temperature runs 27–30°C in season, and visibility is generally good. The site is rated beginner to intermediate and is suitable for new divers and those doing their first ocean dives, while experienced divers typically use it as a warm-up or training dive before heading to deeper offshore sites.
Marine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Reef sharkReef sharkReported here · unconfirmed
Sea turtleSea turtleReported here · unconfirmed
ClownfishClownfishReported here · unconfirmed
BarracudaBarracudaConfirmed present · 2 independent sources
Leopard / zebra sharkLeopard / zebra sharkReported here · unconfirmed
MackerelMackerelReported here · unconfirmed
Dusky NembrothaNembrotha kubaryanaReported here · unconfirmed
Moon WrasseThalassoma lunareReported here · unconfirmed
Ocellaris AnemonefishAmphiprion ocellarisReported here · unconfirmed
Boring Giant ClamTridacna croceaReported here · unconfirmed
Black Longspine UrchinDiadema setosumReported here · unconfirmed
Banded Sea UrchinEchinothrix calamarisReported here · unconfirmed
Pustulose Wart SlugPhyllidiella pustulosaReported here · unconfirmed
Starry PufferArothron stellatusReported here · unconfirmed
Mourning DoridJorunna funebrisReported here · unconfirmed
Scissortail SergeantAbudefduf sexfasciatusReported here · unconfirmed
LionfishLionfishReported here · unconfirmed
ScorpionfishScorpionfishReported here · unconfirmed
Blue DragonPteraeolidia semperiObserved near here · iNaturalist
Hawksbill Sea TurtleEretmochelys imbricataObserved near here · iNaturalist
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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