Coral frozen in time throws lifeline for Great Barrier Reef
Rows of tanks filled with liquid nitrogen sit in temperature-controlled chambers at Sydney's Taronga zoo, cradling parts of the Great Barrier Reef's diverse and magnificent corals frozen in time.
Rows of tanks filled with liquid nitrogen sit in temperature-controlled chambers at Sydney's Taronga zoo, cradling parts of the Great Barrier Reef's diverse and magnificent corals frozen in time.
