Swimmers swam to the shores early on Tuesday morning after a four-metre great white shark was spotted just off Tamarama Beach.

The photo was snapped by new app company Drone Shark, designed to alert surfers of shark spottings across Bondi, Tamarama and Bronte beaches.

Bondi Rescue lifeguard Anthony "Harries" Carroll reposted the photo of the beast to his 48,000 Instagram followers on Tuesday afternoon as a warning to swimmers.

The four-metre great white shark was spotted just off Tamarama Beach by Drone Shark. Credit:Instagram

"What I hope to do by posting the photo is to reduce the risk of an encounter; I just don't want to see someone get eaten," he said. "It's only a matter of time with the amount of activity that's been going on and I just want to let people know there are sensible measures to safeguard themselves like the shark bank that I use, and checking the drone app."