In a study on ocean ecosystems, researchers investigated the relationship between coral reefs and fish populations. They found that healthy coral reefs support a diverse range of fish species, while degraded reefs lead to significant declines in fish numbers. The study emphasized the importance of preserving coral habitats, as they not only provide shelter and food for fish but also play a critical role in maintaining marine biodiversity. Additionally, the researchers recommended various conservation strategies to protect these vital ecosystems from pollution and climate change.