Marine life colonising the stern section at Bonete Wreck (Dartagnan), Ilhabela, Brazil

Marine life colonising the stern section at Bonete Wreck (Dartagnan), Ilhabela, Brazil

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Bonete Wreck (Dartagnan)

Ilhabela · Ilhabela · Brazil

The Bonete wreck, known locally as the Dartagnan, lies off the wild southern coast of Ilhabela, near one of Brazil's most remote and beautiful beaches. Ilhabela's position in the Sao Paulo Channel has made it a graveyard of ships throughout history, and the Dartagnan is one of the more accessible wrecks among the estimated twenty or more vessels that have come to grief on these shores. The wreck rests at approximately 25 metres on a rocky bottom, its hull and superstructure now heavily colonised by sponges, hydroids, and encrusting corals. Large groupers have taken up residence inside the structure, and moray eels peer from every gap and porthole. The wreck's position in the current path means it acts as an aggregation point for schooling fish, with jacks, barracuda, and surgeonfish frequently encountered in dense numbers around the hull. This is not a dive for the faint-hearted. The southern coast of Ilhabela faces the open Atlantic, and conditions here are markedly different from the sheltered northwest side where Ilha das Cabras sits. Strong currents, substantial ocean swell, and visibility that can drop to 5 metres after storms all demand advanced skills and experience. Dive operators will only run trips when conditions allow, and cancellations are common. When the weather cooperates, however, the combination of a well-preserved wreck, abundant marine life, and the sheer remoteness of the setting creates an unforgettable experience. The area around Bonete beach is accessible only by boat or a challenging four-hour jungle trail, adding to the expedition feel of this dive. Operators typically depart from Ilhabela's main harbour and combine the wreck dive with a surface interval at Bonete beach, where divers can explore the waterfall and the small fishing village that has no road access to the outside world.

25 m
Max depth
5-15m
Visibility
December-March
Best season

Marine Life

grouper
barracuda
moray eel
stingray
octopus
lobster
jack
angelfish

Best Season to Dive

Highlighted months represent the ideal conditions for diving

20°C – 26°C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Location

Ilhabela · Ilhabela · Brazil

Coordinates: -23.8700, -45.2800

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Dive Site Depth Profile

Visual depth progression and waypoint route for Bonete Wreck (Dartagnan)

Max Depth:25m
Waypoints:5
0m0m5m5m10m10m15m15m20m20m25m25mSea SurfaceDescent line0mStern25mMidship23mBow20mSafety stop5m
* Plot shows dive progression checkpoints sequentially from left to rightDiveOne Club Depth Profile v1.0

Why dive here

Well-preserved cargo wreck encrusted with marine growth at 25 m depth
Remote location near Bonete, one of Brazil's most beautiful isolated beaches
Strong currents attract schooling fish, rays, and occasional passing sharks

Conditions & safety

Skill leveladvanced
Entry typeboat
Max depth25 m
Currentstrong
Visibility5-15m
Best seasonDecember-March
wreck divedeep diveadvancedstrong currentremoteadventure

FAQ

What is the Bonete wreck dive in Ilhabela?

The Bonete wreck, also known as the Dartagnan, is a cargo vessel that sank off the southern coast of Ilhabela near the remote Praia do Bonete. The wreck rests at approximately 25 metres depth on a rocky bottom and has become an artificial reef supporting diverse marine life including large groupers, moray eels, and schooling fish.

Why is the Bonete wreck considered an advanced dive?

The site's exposed position on Ilhabela's ocean-facing southern coast means strong currents, significant swells, and variable visibility. Dives can only be conducted when weather and ocean conditions align, which limits the diving window. The 25 metre depth combined with the current demands solid experience and good air management.

How many wrecks can you dive in Ilhabela?

Ilhabela is known as a graveyard of ships, with over 20 documented wrecks along its coastline. The most accessible include the Aymore at 9 metres depth for beginners and the Dartagnan at 25 metres. Advanced divers can explore the Prince of Asturias, a luxury liner that sank in 1916, though it sits at depths exceeding 40 metres and requires technical certification.

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