Scientists hope a trial aimed at transplanting heat tolerant coral “babies” on the Great Barrier Reef will help avoid a “massive decline” in fish stocks that could occur if coral coverage declines.

One of the many successful captains to emerge from Cairns, Australia’s ­heavy-tackle black marlin fishery is Corey Hard, who runs the Aussie-built Assegai 55, Askari. Hard began his fishing career ...