Nine Japanese recreational scuba divers and a guide were recently rescued following an extensive search-and-rescue operation.
The team was reported missing after failing to return from a coldwater dive off Bentenjima, a small rocky island near Wakkanai, on April 4, 2026. The group, diving in drysuits, was lost after entering the water on the island’s sheltered side and starting their dive. They were expected to exit back at the boat or shore.
After being notified that the divers were missing, the Japan Coast Guard launched a search-and-rescue operation that included patrol vessels and nearby fishing boats. Thankfully, the entire party was located and brought to safety later that same day. Some reports indicate the rescue was completed within two hours.
The incident location is known for its cold-water diving. Wakkanai sits on Hokkaido’s northern tip, where the Sea of Japan and the Sea of Okhotsk meet, producing cold water and frequently shifting currents. At this time of year, surface temperatures can range from about 2° to 6°C/35.6°F to 42.8°F, and currents of 1–2 knots are common.
The area around Wakkanai and Bentenjima is known for its rich coldwater marine life. Highlights of the marine life in the area include Steller’s sea lions and seals, coldwater corals and kelp forests.
Diving conditions are excellent, often with excellent underwater visibility.
However, the area is not for the faint-hearted, given its powerful currents and low temperatures.