The River Mersey is a major river in northwest England, flowing through the city of Liverpool and into the Irish Sea. It stretches approximately 70 miles and serves as an important waterway for trade and transportation. The river is known for its tidal range, which can significantly affect its flow and navigation. The Mersey is also famous for its iconic landmarks, including the Mersey Ferry and the Royal Albert Dock. It plays a vital role in the local ecosystem, supporting various wildlife and habitats along its banks. The river has historical significance, contributing to the growth of Liverpool as a major port city.