[1] Swarm UAV, a Melbourne company, has developed a camera that automatically identifies sharks through their shape and movements.
[2] The cameras operates by identifying shark-like shapes, even in murky water, then, through an onboard computer that distinguishes them from seaweed, dolphins and surfers.
[3] The camera is expected to be deployed all day at Australian beaches where less reliable and more expensive aircraft patrols pass over only once every two hours.
[Source] Australian Information Technology News – Camera removes shark guesswork