Why Coron Bay is full of wrecks
In September 1944 a Japanese supply fleet lay at anchor in Coron Bay and around Busuanga Island. On the morning of September 24, aircraft of the US Navy's Task Force 38, flying around 340 miles from their carriers, attacked the anchored ships and sank or wrecked most of them.
About a dozen of those wrecks are dived regularly from Coron town, and a report for the Asian Development Bank counts 12 World War II shipwrecks clustered around Barangay Bintuan alone. Eight decades underwater have covered them in hard and soft corals, sponges and fish. They are also war graves: look, but take nothing.
The main wrecks and their depths
Okikawa Maru, a 525 ft (160 m) oiler sitting upright, is the usual first wreck: its deck lies at about 33-52 ft (10-16 m) and the bottom at about 85 ft (26 m). Olympia Maru, a freighter also upright, averages 52-85 ft (16-26 m) and is easy to enter through its holds, while Morazan Maru, on its side, ranges from about 40 to 82 ft (12-25 m).
Deeper and more demanding, Kogyo Maru lies on its side at about 112 ft (34 m), with its holds around 72-92 ft (22-28 m). Akitsushima, an Imperial Japanese Navy seaplane tender, rests on its port side at about 118 ft (36 m) with its crane still recognizable. Irako, a refrigerated provisions ship near the mouth of the bay, reaches about 140 ft (43 m) and is a dive for experienced deep and wreck divers.
Published depths differ slightly between sources, so treat them as approximate.
Coron snorkeling: wrecks you can see from the surface
Snorkelers do not miss out. The Lusong Gunboat, a small gunboat or submarine chaser off Lusong Island, lies so shallow that part of it breaks the surface, with a maximum depth of about 46 ft (14 m). The East Tangat gunboat, sometimes identified as the Terukaze Maru, starts at about 10 ft (3 m) and works for snorkelers and divers alike.
Skeleton Wreck, a small unidentified ship whose bare frame lies close to shore, is a stop on several Coron Island tours: the bow is shallow enough to see from the surface, at around 16 ft (5 m), while the stern drops much deeper. These sites appear on the Reefs and Wrecks and Coron Island routes described in our Coron tours guide. Snorkel where the crew shows you, keep your fins off the coral and never stand on a wreck.
Certification levels and dive planning
Open Water divers, certified to about 60 ft (18 m), can enjoy the decks of Okikawa Maru, Olympia Maru, Morazan Maru and the gunboats, but most of the famous wrecks are deeper, and operators generally recommend Advanced Open Water plus wreck training for them. Going inside a hold or engine room is overhead diving: do it only after a wreck course and with a guide who knows the route. Dive centers in town teach Advanced and Wreck courses on these sites.
A typical day trip leaves in the morning for two or three dives, usually wrecks plus a reef or Barracuda Lake. The wrecks can be dived all year, but rough seas, most often from June to October, can change the plan; the weather guide explains the seasons.
Diving Barracuda Lake
Barracuda Lake on Coron Island is a dive with no equivalent nearby: you carry your gear up a short stairway over the rocks, then descend through layers of different water. According to dive guides, the boundary between fresh and salt water lies only about 13 ft (4 m) down, and at around 46 ft (14 m) the temperature jumps from about 82 °F (28 °C) to about 100 °F (38 °C). The silty bottom, at about 115 ft (35 m), is dark with tannins from fallen leaves.
Marine life is sparse; the geology is the attraction. The lake lies within the Tagbanua ancestral domain, so an entrance fee is paid and local rules apply. Snorkelers visit on island-hopping tours too; Kayangan Lake is the other lake open to visitors.
Choosing a dive shop in Coron
Coron town has many dive centers affiliated with PADI or SSI. Before booking, ask about group size per guide, how they plan and brief wreck penetrations, whether the boat carries oxygen and a first-aid kit, and whether rental gear and computers are in good order.
Pick operators that brief on buoyancy and not touching, moor rather than drop anchor on the reef, and do not let divers wear gloves or collect souvenirs. Green Fins, a code of conduct run by the Reef-World Foundation with the UN Environment Programme, lists its member dive and snorkel centers on its website. Buy dive insurance before you travel and, following standard dive-safety guidelines, leave at least 18 hours between your last dive and your flight out of Busuanga after several days of diving; see the safety page for health basics.