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Giant Cuttlefish

Sepia apama

The giant cuttlefish (Sepia apama) is a species of cuttlefish known for its large size and distinctive appearance. They can grow up to 20 inches (50 cm) in length and weigh up to 2.2 pounds (1 kg). 

The giant cuttlefish has a wide and flat body, with a unique internal shell called a cuttlebone. Its skin is covered in small, raised bumps and has the ability to rapidly change color and texture for communication, camouflage, and self-defense.


The giant cuttlefish is found in the temperate waters of the southern coast of Australia and South Africa. They prefer shallow waters and are commonly found in seagrass beds, rocky reefs, and sandy bottoms.


The giant cuttlefish is a carnivorous species that feeds on small fish, crustaceans, and other invertebrates. They use their two tentacles and beak to capture and kill their prey, which they then consume whole.


The giant cuttlefish is a solitary species that is known for its highly developed communication and camouflage abilities. 

They use their ability to rapidly change color and texture to signal to other cuttlefish, attract mates, and avoid predators. Giant cuttlefish are also known to be intelligent, with the ability to learn and solve problems.


The giant cuttlefish (Sepia apama) is a species of cuttlefish in the family Sepiidae. It is closely related to other species of cuttlefish and is considered one of the largest species of cuttlefish in the world.

 The species was first described in the late 1700s and is widely studied for its unique biology and behavior.

The giant cuttlefish is not currently listed as endangered or threatened by the IUCN Red List, but its population is vulnerable to overfishing and habitat destruction. Ongoing monitoring and conservation efforts are necessary to ensure the survival of this unique species. 

The giant cuttlefish is also considered a valuable species in the seafood trade and is harvested for food and as a source of cuttlebone, which is used as a calcium supplement for pet birds.

Giant Cuttlefish Graphic
@KillerWren via Twenty20
Giant Cuttlefish Clickable
@KillerWren via Twenty20
Giant cuttlefish Sepia apama photo
"Giant cuttlefish Sepia apama" by Marine Explorer is licensed under CC BY-NC-SA 2.0.
Giant cuttlefish Sepia apama picture
"Giant cuttlefish Sepia apama" by Marine Explorer is licensed under CC BY-NC-SA 2.0.