Underwater Connections Short Answer

Even though barracudas are often solitary, they still interact with many other species in the ocean. This passage introduces students to examples of mutualism, parasitism, and commensalism involving cleaner fish, parasites, and smaller fish that may benefit from swimming near barracudas. Readers learn how cleaner fish can remove parasites from a barracuda, how parasites can harm the fish, and how other species may gain protection without affecting the barracuda at all. These relationships show that even a fierce predator is connected to a much larger ecological community.

This reading gives students meaningful practice comparing different types of relationships. They must determine who benefits, who is harmed, and who remains unaffected in each example. Academic vocabulary such as mutualism, parasitism, commensalism, and ecosystem becomes much easier to understand when students can connect each term to a specific situation. It is a strong worksheet for developing classification, comparison, and higher-level nonfiction comprehension.