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Located on the east coast of the Eyre Peninsula, Whyalla is the third most populous city in South Australia, and boasts a warm climate, accessible beaches and great fishing.  Whyalla developed as an industrial city with integrated steelworks and shipbuilding facilities.  Iron ore has also been exported from Whyalla since 1903.  Visit the Whyalla Maritime Museum and tour the HMAS Whyalla.

The annual winter mating of the Giant Australian Cuttlefish in the shallow waters near Whyalla is a sight to behold.  Thousands of Giant Australian Cuttlefish, also known as sepia apama, migrate to the coastline between False Bay and Fitzgerald Bay near Whyalla for spawning.  This species of cuttlefish can grow up to 0.6m | 2ft long and weigh up to 5kg | 11lbs.  The mating rituals can be observed by both divers and snorkelers in depths of water typically 3-5m | 10-16ft deep.

The cuttlefish change their colours and patterns based on threats but also as part of their mating behaviour.  These amazing underwater scenes can be witnessed during the southern winter between May and August. The water temperatures range between 12-15°C | 53-59°F during the mating season.  The dive sites are accessible by shore and access points have been installed to assist divers in entry and exit from the water.

Dive Sites

Whyalla Giant Cuttlefish Mating Season

Depth (5m | 16ft) |
From May to August thousands of giant cuttlefish aggregate near Whyalla to spawn, displaying competitive mating behaviour. The cuttlefish grow up to 60cm | 2ft for the larger males, can change their patterns and colours and emit a cloud of black ink when threatened.

Old Iron Ore Jetty

Depth (12m | 39ft) |
Enter from north beach next to the yacht club, surface swim to the yellow marker and descend to the channel at the end of the jetty. Large pile of bulldozer party and jetty materials at the end of the channel. Head south to find another 3 large debris piles. Resident dolphins are common visitors.
There are many more dive sites in this area that can be arranged on request either to the skipper on the day of this event for normal dives,
or by Contacting Us for specialist technical dives.


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