Spills can have a harmful impact on marine ecosystems. When substances like oil or chemicals are spilled into the ocean, they can contaminate the water, affecting the marine life that depends on it. The toxic substances can harm marine organisms, including fish, birds, and sea turtles. It can also damage their habitats, such as coral reefs or coastal areas. The long-term effects of spills can be devastating, as they can disrupt the food chain and have lasting ecological consequences. It's important to prevent spills and respond quickly to minimize their impact on marine ecosystems.