Stock Photo - Long-spine porcupinefish, Diodon holocanthus, inflated at surface. When threatened, it takes in water and inflates its body, making dozens of spikes stand out defensively. The balloonfish inflates by taking water into its body when it is threatened. Along with inflation, there may also be a color change due to the excitement. Is used in Chinese medicine. Copy space. Panoramic photography. Indian Ocean

Stock Photo: Long-spine porcupinefish, Diodon holocanthus, inflated at surface. When threatened, it takes in water and inflates its body.

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