Coral propagation programmes grow coral fragments in nurseries and transplant them onto degraded reefs. These restoration efforts raise questions about coral welfare and the limits of what restoration can achieve.
Coral restoration raises interesting questions at the frontier of animal welfare. Corals are animals, but their neurological simplicity makes the attribution of suffering uncertain. The welfare concern for coral restoration is more ecological than individual — fragmenting and replanting corals may cause local damage but serves ecosystem restoration that supports the welfare of millions of fish and invertebrates that depend on reef habitat. The larger welfare consideration is that reef restoration cannot succeed without addressing the climate change and water quality drivers of reef decline — restoration without root cause treatment is perpetually swimming against the tide.