Chuuk Wreck Diving After the 2025 Oil Leak: What to Check

You have your certification card, your dive computer, and a list of famous wrecks you have dreamed about for years. Before you plan a Chuuk wreck dive now, add three questions to the usual checklist of certification and currents: which sites are open, is any advisory or closure in place, and where does that information come from?

First: ask what is open now

The Rio de Janeiro Maru oil leak was reported in September 2025. Reporting up to June 2026 continued to describe wider risks from corroding wrecks.

We have not seen a clear official statement, as of October 2026, that every affected site is clean or open. So please do not assume it.

Ask your local operator which sites are open right now, whether any local advisory or closure applies, and where that information came from. If an official authority has restricted an area, follow that instruction. Access and rules can change, so check locally.

What should you tell your dive guide in Chuuk?

Chuuk wrecks are very different in depth, condition and what they need for penetration. Be honest about your certification, your experience, your gas planning and how comfortable you feel in overhead environments.

Dive with a guide who has the right qualifications. Do not enter a wreck if you are not trained and equipped for that dive. Our list of questions to ask a dive operator before booking can help you start that conversation.

Protected sites in other places, such as Komodo, remind us that certification, space for wildlife and good boat behaviour all matter. For Chuuk, ask the operator for the rules that really apply there. Do not copy the rules of another destination.

Respect the place above and below the water

These are historic wrecks and, in many cases, war graves. Do not take objects. Do not touch or disturb human remains, do not go beyond your training, and do not leave waste. Keep an eye on the reef and on the surface, not only on the camera screen. Our piece on what reverence looks like at a WWII wreck goes deeper into this.

If the conditions, a contamination report or your own readiness tell you to skip a dive, listen. The lagoon’s story is still powerful from the boat or from the shore. The people who live there should have a say in how visitors move through it. Confirm access again with the local team before you travel.

Wildlife encounters are unpredictable. Wreck diving among reef life should always follow local regulations and experienced professional guidance.

Questions people ask

Wildlife encounters are never guaranteed and never forced. Ocean Calling works only with vetted, ethical local operators, and every animal is free to approach, or not, entirely on its own terms.