A study from the University of Hawaii highlights the potential negative impacts of deep-sea mining on marine ecosystems, particularly affecting small animals that are crucial to the food web. The research indicates that mining waste could disrupt the food sources for zooplankton and micronekton, ultimately impacting commercially important fish species. The study calls for more research on the environmental consequences of returning mining waste to the ocean and suggests alternative sources for critical minerals. Environmental groups are concerned about the broader implications of deep-sea mining on ocean health.