Deputy Premier John Barilaro says the $21.4 program will expand its use of drumlines, listening stations and the world's largest fleet of domestic drones.

"There is no other jurisdiction in Australia or across the globe which has done as much testing and trialling of technology and approaches to mitigate shark interactions," Mr Barilaro said.

In the coming weeks the government will work with coastal councils to make sure 50 beaches have a "shark-spotting eye-in-the-sky" said Minister for Agriculture Adam Marshall.

"This summer season, we will be deploying over 100 SMART drumlines in nearly every coastal council area starting with Kingscliff, Tuncurry and Coffs Harbour next month," Mr Marshall said.

"We will also continue the deployment of shark nets as part of the shark meshing program in the Greater Sydney Region while we measure the success of the expanded technology-led solutions."

There will be 37 listening stations set up to make sure when a tagged shark comes closer to the coast anyone using the SharkSmart app will know instantly.

The Humane Society welcomed the investment in non-lethal technologies but said the government needed to also end shark nets as called for by six local councils: Newcastle, Central Coast, Northern Beaches, Waverley, Randwick and Wollongong.

Marine biologist with the animal protection not-for-profit Lawrence Chlebeck said the nets entangle and kill harmless dolphins, turtles, rays and sharks.

"Shark nets provide nothing more than a false sense of security," Mr Chlebeck said.

"One turtle is caught in the shark nets every 20 days and no Sydneysider wants that for a false sense of security."

Australian Associated Press