Fears of ‘catastrophic’ decline of giant Australian cuttlefish after only 44 counted in dive survey

Published 8 August 2026 · india

Calls for South Australian government to release official estimates for cuttlefish, which once numbered in hundreds of thousands in upper Spencer Gulf Sign up for

Calls for South Australian government to release official estimates for cuttlefish, which once numbered in hundreds of thousands in upper Spencer Gulf Sign up for climate and environment editor Adam Morton’s free Clear Air newsletter here Scientists and divers have called on the South Australian government to release official cuttlefish population estimates amid fears of a “catastrophic” decline, after a dive survey counted only 44 individuals. Each year, tens to hundreds of thousands of giant Australian cuttlefish assemble off the coast of Whyalla, in the upper Spencer Gulf, to breed the only place globally where cuttlefish gather en masse. Sign up to get climate and environment editor Adam Morton’s Clear Air column as a free newsletter Continue reading...

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