Giant internal waves can move down the side of submerged mountains and are detected by temperature differences between water layers.

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Internal waves are progressive waves that occur at the junction between water layers of different densities. Internal waves move slowly because the density difference between the joined water masses is very small. they are important because they can mix nutrients into surface water and trigger plankton blooms and can also affect submarines. Internal Waves Can Form between Ocean Layers of Differing Densities

Giant Internal Waves Can Move Down the Side of Submerged