Coral can harm fishermen by causing physical injuries. Coral reefs are known for their sharp and brittle structures, and if a fisherman accidentally comes into contact with them, it can result in cuts, scrapes, and even more serious wounds. Additionally, some species of coral are venomous and can cause stings or bites, leading to pain, swelling, and allergic reactions. These injuries can not only be painful but can also lead to infections and other complications if not properly treated. Therefore, fishermen need to be cautious and aware of the potential harm that coral can cause while working in coral reef areas.