wonky hole

Etymology
Named by the local fishermen who first encountered them (see quotation below).

Noun

 * 1)  A type of undersea hole or spring on the Great Barrier Reef in Australia, out of which comes fresh water that has flowed underground from the land.
 * 2) * It was local fishermen who made the most startling seafloor discovery. Something unknown was snagging their nets and nearly capsizing their boats. And they called the mystery – wonky holes. &mdash; Australian Broadcasting Commission Catalyst program, 18 May 2006 (transcript)