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Giant Cuttlefish (Sepia apama)

Curious and charismatic, Giant Cuttlefish are one of the most fascinating creatures you will discover when diving around the Merri Marine Sanctuary. Large and generally solitary, they tend to hide in caves and amongst seaweed during the day.

Giant Cuttlefish are able to adjust their skin colouration at a split second to match their background. When feeding, they hover just off the seafloor, slowly stalking shrimp, crabs or fish. Giant Cuttlefish attempt to overwhelm their prey's attention using vibrant colour changes of yellow, orange or red. Two long tentacles shoot out when the animal moves close enough to make a strike.

Colour also plays an important part in cuttlefish communication. After laying their eggs on reefs, female Giant Cuttlefish die.