There are 5 Great Lakes - Huron, Ontario, Michigan, Erie, and Superior. Each lake varies in size, depth, shoreline length, and notable facts. The document also discusses the types of fish found in the lakes, such as salmon, carp, and lake trout, as well as vessels like freighters, tugboats, and sailboats. Additionally, it covers common pollutants like mercury, lead, petroleum, sewage, and fertilizer that have impacted the Great Lakes. Several islands in the Great Lakes region are also named.