By Salah Teman · 5 August 2026
Castle Rock is a submerged seamount off the northern tip of Komodo, near Gili Lawa Laut. Nothing breaks the surface, so first-timers are often unimpressed until they descend and find themselves in one of the busiest pieces of water in the national park.
A hook-in dive
Current is the whole point here. Divers typically descend fast, get into the lee of the seamount and hook in, then watch. Fighting the flow is pointless and exhausting; the technique is to anchor yourself and let the reef come to you. A reef hook and solid buoyancy are essential.
What you see
Large schools of trevally and jacks stack up on the current-facing side, with grey reef and white-tip sharks holding station below them. Fusiliers and surgeonfish move in dense clouds. At dawn and dusk the predators switch on and the hunting activity is the reason experienced divers ask for this site specifically.
Experience level
Advanced, with genuine current experience. This is not a site to learn hooking technique on.
Conditions
Water temperature in central and north Komodo runs 26–30°C, generally warm and calm. A 3mm long wetsuit is the most versatile choice; bring a 5mm or a neoprene hoodie if you feel the cold. The Komodo season is June to September, departing from Labuan Bajo. Open Water divers are limited to a maximum depth of 18m by law and insurance.
Diving it with Teman
The KLM Teman carries 12 guests in 5 ensuite cabins with a crew of 10, which keeps groups small on sites where spacing matters. This site features on our Komodo itineraries from 4 days upward.
More Komodo dive sites
See all itineraries and dates on our Komodo liveaboard page.
Salah writes for Teman Liveaboard, the owner-operator of the KLM Teman. The Teman is a 36-metre Indonesian phinisi, handbuilt in Sulawesi and launched in 2017, carrying 12 guests in 5 ensuite cabins with a permanent crew of 10 and a Cruise Director. The team behind her has more than 20 years sailing the Indonesian archipelago. The boat works Komodo National Park from June to September out of Labuan Bajo, Raja Ampat from November to April out of Sorong, and runs Banda Sea and Ring of Fire crossings between the two seasons. The dive site guides on this blog are written from the operator's own logs and itineraries, with conditions, seasons and equipment guidance checked against the dive team who work these sites every week. Where a detail depends on the day — depth on a given tide, or where a current will take you — we say so rather than guess, because that is a briefing the Cruise Director gives on the boat, not something a web page can promise.
Ready to Start Planning?
Have More Questions?
Our team is ready to help you craft the perfect, safe, and unforgettable trip. Contact us today!
About the author
Salah Teman — Salah writes for Teman Liveaboard, the owner-operator of the KLM Teman. The Teman is a 36-metre Indonesian phinisi, handbuilt in Sulawesi and launched in 2017, carrying 12 guests in 5 ensuite cabins with a permanent crew of 10 and a Cruise Director. The team behind her has more than 20 years sailing the Indonesian archipelago. The boat works Komodo National Park from June to September out of Labuan Bajo, Raja Ampat from November to April out of Sorong, and runs Banda Sea and Ring of Fire crossings between the two seasons. The dive site guides on this blog are written from the operator's own logs and itineraries, with conditions, seasons and equipment guidance checked against the dive team who work these sites every week. Where a detail depends on the day — depth on a given tide, or where a current will take you — we say so rather than guess, because that is a briefing the Cruise Director gives on the boat, not something a web page can promise.
