Possibly the most well-known dive site in the world can be found roughly 96 kilometres north of Cairns, at Cod Hole. Part of the string of long narrow Ribbon Reefs, Cod Hole is home to a group of very friendly potato cod, reaching up to 100 kilograms, that have become accustomed to divers over the past 30 years. The giant fish approach quite closely, and can be hand fed at the site. Many other large and small reef fish populate this site, and during the winter months you may even be photobombed by a dwarf minke whale - they have been known to linger around for encounters with snorkellers and divers for hours. Local dive operators do offer trips that aim to maximise these encounters, as well as dive some of the other outstanding sites in the area.