Up to 50% of the world's coral has died, but scientists are figuring out how to regrow reefs - here's what the process looks like
Branching corals can resemble animal antlers — some species are named staghorn and elkhorn. They provide incredibly important habitats, but vast numbers of them have died off.
Other types of corals, called massive corals, grow even more slowly and resemble boulders. They are also essential to reefs, and they're also dying.
But as promising and effective as these techniques are, they don't take away the need to deal with the root causes of coral bleaching and death.
These techniques show that there are ways to bring back reefs, provided oceans remain hospitable enough for life. But the long-term solution will still require cutting fossil-fuel emissions that trap heat and pollute ocean waters.
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