The Lena is the main dive attraction of Bunbury and one of the best purpose-sunk wrecks on the WA coast for Open Water divers. She was a 55 m, Russian-registered steel fishing vessel caught by the Royal Australian Navy poaching Patagonian toothfish in Australian waters about 4,000 km south of Albany, after a long pursuit. Brought to Fremantle and placed under the control of the Australian Fisheries Management Authority, she was due to be scuttled in deep water until the Bunbury Chamber of Commerce and Industry won a bid to sink her as a local dive attraction. After 12 months' preparation she was sunk with explosives on 19 December 2003, three nautical miles off Bunbury, and settled upright in 17 m with her bow to the west.

Most of the dive is spent between 8 and 14 m, so bottom times are long and the whole ship can be explored in about 45 minutes. Marinelife.org.au describes large, open internal spaces with three or four exits, chairs, the fish processing plant, the main engine, generators and an intact propeller. Octopus Garden reports more than 110 species of marine life on the wreck and calls it a photographer's paradise, with nudibranchs and seahorses among the fish.

The wreck is changing. Divingwawrecks notes that after the 2022/23 summer, sections were deteriorating and collapsing each winter under large swells, and advises caution with unstable deck plating during penetration. It remains an easy, fishy, well-structured wreck that suits Open Water divers, wreck-course students and photographers, and it pairs well with the Bunbury artificial reef or the coral lumps offshore.

Bunbury is about two hours' drive south of Perth. Octopus Garden Dive Charters departs from Casuarina Boat Harbour at 8.30 am (back by 1.30 pm) on a 36-foot boat carrying up to 10 divers; divingwawrecks puts the wreck about 15 minutes from the Bunbury harbour boat ramp. Private boats launch at the Casuarina/Bunbury harbour ramps and run about 3 nm (5.5 km) offshore to the GPS mark.

Best dived in low winds and light swell; divingwawrecks reduced its recommended swell limit to under 1 m after the 2022/23 season because winter swells are collapsing sections of the wreck. Geographe Bay is sheltered from the south-west, but north-westerly winds and winter storms roll swell straight in. Morning easterlies before the sea breeze give the best conditions.

Descend the line to the deck at about 8-10 m, tour the superstructure and deck, then drop to the sand at 17-18 m to see the intact propeller and hull. Experienced divers can look into the large open internal spaces (fish processing area, engine room) via the 3-4 exits, checking for unstable plating. Ascend the line with a safety stop.

Wreck specialty recommended for interior penetration.

Octopus Garden Dive Charters (Bunbury) is the regular charter operator, mainly October to April, weather permitting; divingwawrecks describes it as the only charter running to the wreck. Private boats also dive it.