December’s Reader’s Digest has surfaced early, its cover story my account of the amazing recent discovery of the Southern Hemisphere’s largest orca aggregation, as told by its discoverer, wildlife filmmaker Dave Riggs.

Orcas or killer whales were thought of as occasional, rarely seen visitors to Australian coastal waters. The idea they were hiding in plain sight in the midst of a busy shipping lane seemed too outrageous to be true.

Dave’s story is a cracking good one, a real mystery of the sea, with plenty of twists and turns – check it out!