Cuttlefish are known for their extraordinary cognitive abilities and their intricate and unique camouflage techniques.

The sheltered waters of South Australia’s Upper Spencer Gulf Marine Park are home to the Giant Australian Cuttlefish (Sepia apama) and the Cuttlefish Coast Sanctuary Zone.

These are the largest cuttlefish in the world, which can grow to 50cm long and weigh up to 10kg.

The sanctuary protects the largest known breeding habitat of the Giant Australian Cuttlefish (Sepia apama).

Its shallow, fringing, rocky reef system lures thousands of cuttlefish to breed each year between May and August; the largest and most significant breeding aggregation for the species.

Fierce competition between male cuttlefish has led to complex breeding behaviours. Spectacular displays that include changes in colour, shape and texture aim to attract or ambush potential mates.

But not much is known about their broader behaviour, or impact on their habitat, information which is critical for conservation of the species and planning.

Cosmos producer Andrew Wyrill met one woman who is beginning a new research project to discover more about these creatures, work which coincides with the start of the mass breeding season at the beginning of winter.

The Great Southern Reef Foundation assisted with images of the cuttlefish in their natural habitat.

Read more about the Great Southern Reef where cuttlefish live