Is a tidal wave a longitudinal?

A tidal wave, often referred to as a tsunami, is primarily a series of ocean waves caused by disturbances such as underwater earthquakes. These waves are not classified as longitudinal waves; instead, they are surface waves that involve both longitudinal and transverse wave properties. In contrast, longitudinal waves consist of compressions and rarefactions, like sound waves. Thus, while a tidal wave involves complex motion, it is not purely longitudinal.