GoKawiilLab study shows bleached coral regains colour within days via contact with healthy coral
Researchers at Hopkins Marine Station observed that a bleached coral fragment regained its pigmentation after being placed touching a healthy fragment from the same coral colony. In a controlled experiment with ten fragment pairs of Pocillopora damicornis, five pairs were set to touch each other while five were kept apart, and the touching pairs showed transfer of symbiotic algae and rapid recovery of colour within days to weeks. The findings were published in Science Advances on 14 October.
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The result suggests that direct contact can enable symbiotic algae to migrate between coral fragments, potentially offering a fast route to recovery after bleaching events caused by warming seas. Co-author Fiorenza Micheli says the finding could inspire scalable interventions, though it remains unclear whether this lab-based mechanism would work across reef-scale bleaching or diverse coral species. More research would likely be needed before any practical restoration method could be developed from this observation.
- Bleached coral fragments regained colour within days to weeks after touching healthy fragments from the same colony.
- The experiment used ten paired fragments of Pocillopora damicornis, split between touching and non-touching groups.
- Researchers say the finding could inspire scalable strategies for coral reef recovery, though this remains speculative.
Source: nature.com — Wild, 2026-10-14
Published there as: “‘Incredible’: bleached corals thrive within days when touching healthy neighbour”
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