An amazing video has emerged from Australia of tourists encountering a great white shark eating a dead minke whale.

The footage, captured on August 11 off the coast of Sydney, shows the shark feasting on the whale carcass right in front of the tourists' boats.

''I took my 3 year old daughter to Sydney to our first whale tour and we witnessed a once in a life time event,'' the filmer later wrote online.

''My daughter didn't bat an eyelid,'' he added.