Aquaculture

Aquaculture, is the practice of farming aquatic organisms like salmon in fresh, brackish [mixture of fresh & salt water] or salt water. Aquaculture is considered an agricultural activity, despite the many differences between aquaculture and terrestrial [land based] agriculture. Aquaculture was first developed more than 2,000 years ago in countries such as China and Egypt, and commonly involved stocking wild-caught seed—for example, carp fingerlings (juvenile fish) captured from rivers—in ponds or other bodies of water for further growth. Whilst the industry has evolved to a high level of sophistication thanks to extensive research and development, one thing remains the same: Most aquacultural crops are developed to augment natural populations of fish and be a primary source of food destined for human consumption.

Source: The Huon Aquaculture Group [HUON] 2009

MORT Divers

'Mort Divers' are resposible for:

• recording observed data for assessing fish health
• mort removal and determining cause of mortality
• net inspection and repair
• checking net integrity (setting and mooring etc.)

Strahan Divers dive one at a time in each pen to "collect and inspect". They breath AIR via a surface-supplied breathing apparatus called an AGA mask linked by an umbilcle to an airbank of cyclinders on the boat which is tended by an ADAS dive crew on the surface. Each diver rotates to dive four-five times a week for up to 150 mins each dive to a depth of 12 meters for anywhere up to 19 bounces. This means we ascend and descend up to 19 times in any one dive. We work in zero visibility in an ocean harbour naturally stained by the tannins of tea tree and button grass local to the remote pristine World Heritage Wilderness Area of the Gordon-Franklin, Tasmania.

I considered my employment somewhat of a self-designed research residency project. By exploring farmed ocean fishing practices from the vantage of the mort diver tending to salmon and trout in free-flowing ocean pens at various stages of life from smolt to harvest-sized fish, and the relationship to the crews, farmers and environment, to reflect on cycles of life and light. Material and experience gathered will culminate towards a publication (due to be released April 2011) and a short 'magical realism' film with Anita Doron.



Maquarie Harbour, Tasmania: a unique naturally occuring "black water" harbour tannin-stained by indigenous teatree and button grass from the Gordon-Franklin World Heritage Wilderness. (Scale: 2xSydney Harbour.)

Langerrareroune (Aboriginal Name) Sarah Island (Colonial name) Tasmania's first Penal Settlement 1822-33. Maquarie Harbour, Tasmania