Research shows that clownfish can shrink in size during heat waves, improving their survival chances. Observations in Papua New Guinea revealed that 75% of clownfish shrank at least once during a recent heat wave, with shrinking linked to social dynamics and environmental stressors. This adaptive strategy may help explain declining fish sizes globally, as other species also exhibit similar responses to climate change. The study highlights the resilience of marine life in the face of environmental challenges, although the long-term effects of such adaptations remain uncertain.