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Description of Sepia apama:
Sepia apama is the Australian Giant Cuttlefish. It is the world\'s largest cuttlefish species, growing to 50 cm in mantle length and over 10.5 kg in weight. S. apama is native to the coast of Australia, from Brisbane in Queensland to Shark Bay in Western Australia. It occurs on rocky reefs, seagrass beds, and sand and mud seafloor to a depth of 100 m. Breeding takes place with the onset of the southern winter. Males abandon their normal cryptic colouring and set out to dazzle the females by adopting rapidly changing bright colours and striking patterns. Devious males mimic female colouring and form in order to gain access to females protected by dominant males. Death follows shortly after mating and laying of eggs that will spawn the next generation. Sepia apama are primarily diurnal and have a small home range (90-550 meters) over short recording periods. They are able to channel most of their energy directly into growth because they spend 95% of the day resting, suggesting bioenergetics more like that of an octopus than a squid. Very little time is spent foraging (3.7% during the day and 2.1% during the night), most of their time is spent resting and hiding in crevices from predators. The exception to this behavioral routine is the mass spawning aggregation, where cuttlefish are far more active during the days or weeks that they spend there.
Cellular life 
Choanoflagellates and animals 
Sepia apama