Bombora is an indigenous Australian term for an area of large sea waves breaking over a shallow area such as a submerged rock shelf, reef, or sand bank that is located some distance from the shoreline and beach surf break. In slang it is also called a bommie.
As the wave passes over the shallow area its shape is raised and steepened, creating a localised wave formation. The size and shape of bombora waves makes them attractive to surfers willing to take the risk of riding what is generally considered a hazardous pursuit.
These formations can pose a significant danger even in good weather as a bombora may not be identifiable because it may not always have breaking waves.
The term Bombora was given wide circulation by the airing on ABC TV in 2009 of a documentary titled Bombora - The Story of Australian Surfing, which received a nomination for the 2010 Logie Awards in Australia. The documentary explored historical dimensions of the relationship between surf culture and Australian cultural identity.
Bombora was also the title of a popular music instrumental released in 1963 by Australian surf rock band The Atlantics.
The term bombora is also used for a sketchy surf spot where waves seem to break on the outside.