Whyalla

Whyalla is an industrial town on the Upper Spencer Gulf in South Australia, and for most of the year it is an unremarkable dive destination. From May through August it becomes the site of the world's only known giant cuttlefish mass aggregation — tens of thousands of animals converging on a shallow, rocky stretch of coast to mate and display. The dive is shallow, cold, and usually poor visibility by reef standards. None of that matters; the density and colour of the animals is unlike anything else in the ocean.

Signature dive sites

The sites you'll hear about in every briefing.

• 01

  Stony Point

  Shore access to the aggregation rocks. 2–5m depth.

• 02

  Point Lowly

  Alternative aggregation access point slightly deeper.

What you'll see

Top species with their April status.

Giant Australian Cuttlefish

Sepia apama

Present

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Getting there