Silverswift was on the return journey from the reef, about half way between Cape Grafton and Green Island, when they noticed a large humpback breaching and stopped the vessel.
Silverswift Dive Instructor Sam Killian said they believed it was a male humpback breaching (celebrating perhaps?!), and the nearby female was on the surface when a small calf, less than 2 metres in length emerged to the surface. The calf did a few rolls and swam around close to the mother.
Just previously, a large humpback swam through the dive site while Silverswift was moored at one of our exclusive sites at ï¿½Traceyï¿½s Bommieï¿½, Flynn Reef.
Humpbacks are generally seen on the Great Barrier Reef between the months of June to September with regular sightings at the Outer Reefs and Green Island, bringing an added bonus for passengers at this time.
Humpback whales regularly migrate from Antarctic waters along the east coast of Australia every winter to the warmer waters of the Great Barrier Reef to breed and calve. They are easily identified by having extremely large pectoral fins (their scientific name is Megaptera, which literally means giant wing), and scalloped flukes. They grow up to approximately 16 metres in length, weighing in at 30-50 tonnes. Male humpbacks produce ï¿½songsï¿½, which are believed to attract females at mating times.