Uploaded November 2017 | Updated September 2026, 2 hours ago
The annual migration of the Australian Giant Cuttlefish to the waters of the upper Spencer Gulf to breed is one of the most spectacular natural events in the Australian marine environment and unique in the world to Whyalla. This natural wonder attracts divers from all over the world to experience the aggregation from May to August which is unique to Whyalla.
Cuttlefish are intelligent creatures able to change their colour, shape and texture as they move along the seabed to imitate rocks, sand or seaweed. Males are vastly outnumbered by females leading to fierce and frenzied competition between them for mating privileges, leading to displays of unusual and spectacular behaviour. After mating the rocky seabed provides unique and perfect points for the females to anchor eggs.
Apart from using their pigmentation to hide or warn other animals, large males also flash zebra patterns to confront other males.
The Giant Australian Cuttlefish can also shoot a cloud of black ink when threatened or attacked.
This easy, shore-entry dive is a must on the winter calendar in South Australia!
The annual migration of the Australian Giant Cuttlefish to the waters of the upper Spencer Gulf to breed is one of the most spectacular natural events in the Australian marine environment and unique in the world to Whyalla. This natural wonder attracts divers from all over the world to experience the aggregation from May to August which is unique to Whyalla.
Cuttlefish are intelligent creatures able to change their colour, shape and texture as they move along the seabed to imitate rocks, sand or seaweed. Males are vastly outnumbered by females leading to fierce and frenzied competition between them for mating privileges, leading to displays of unusual and spectacular behaviour. After mating the rocky seabed provides unique and perfect points for the females to anchor eggs.
Apart from using their pigmentation to hide or warn other animals, large males also flash zebra patterns to confront other males.
The Giant Australian Cuttlefish can also shoot a cloud of black ink when threatened or attacked.
This easy, shore-entry dive is a must on the winter calendar in South Australia!
