who are their predators?
Elephant seals
King Island emu
The exact cause for the extinction of the King Island emu is unknown. Soon after the bird was discovered, sealers settled on the island because of the abundance of elephant seals. 
what is the king island emu? It is an extinct subspecies of emu. when did it go extinct? 1805 what was their relation with humans? The species were first recorded by Europeans in January 1802 where was this? King Island which sea or ocean surrounds this island? UNANSWERABLE what other species can you find on this island? UNANSWERABLE can you please describe the extinct species? It had darker plumage than the mainland emu, black and brown and had naked blue skin on the neck. so this species does still exist today in other parts of the world? Yes, several emu specimens belonging to the different subspecies were sent to France. what do they eat? Berries, grass and seaweed.
wiki:4441383
King Island emu [SEP] Extinction
The exact cause for the extinction of the King Island emu is unknown. Soon after the bird was discovered, sealers settled on the island because of the abundance of elephant seals. Péron's interview with Daniel Cooper suggested that they likely contributed to the demise of the bird by hunting it, and perhaps by starting fires. Péron described how dogs were purpose-trained to hunt down the emus; Cooper even claimed to have killed no fewer than 300 emus himself. Cooper had been on the island for six months, which suggests he killed 50 birds a month. His group of sealers consisted of eleven men as well as his wife, and they alone may have killed 3,600 emus by the time Péron visited them.