Last winter, a team of divers braved Tasmania's icy eastern waters to help give the region's spectacular giant kelp forests a fighting chance.

STORM BAY, Tasmania—At a salmon farm here is an experiment that researchers hope can save an entire ecosystem from warming oceans. Beneath the waves, scientists are growing several types of giant kelp ...

A chain reaction ensued after the kelp forest decline. With limited grazing availability, abalone were threatened and the ...