Is Bob the Bluebottle Australia's saviour?

By Hannah Higgins
Updated July 25 2019 - 4:38am, first published 4:35am
The Bluebottle, a marine drone that could patrol Australia's borders, will be on show in Sydney.

It's small, bright blue and named after an unwelcome visitor to our beaches but the experts say the Bluebottle will take the dull, dirty and dangerous work out of defending Australia.