Healthy corals can help bleached corals?

Coral bleaching is when the corals get stressed and lose their algae. They turn white and start to starve, and can eventually die.

So, I was happy to see this cool paper shared on Facebook.

The credo summary is helpful. The TLDR:

Brief contact with a healthy coral can restore a bleached coral by quickly supplying the tiny partners it needs to survive. The approach worked only when the corals shared the same genetic type.

Sounds like it's still somewhat "early stages" and not implemented at a large scale, but it sounds promising.