Editing Physical oceanography (section)

===Langmuir circulation===
[[Langmuir circulation]] results in the occurrence of thin, visible stripes, called [[windrow]]s on the surface of the ocean parallel to the direction that the wind is blowing. If the wind is blowing with more than 3&nbsp;m&nbsp;s<sup>−1</sup>, it can create parallel windrows alternating upwelling and downwelling about 5–300&nbsp;m apart. These windrows are created by adjacent ovular water cells (extending to about {{convert|6|m|ft|abbr=on}} deep) alternating rotating clockwise and counterclockwise. In the [[Convergence zone|convergence]] zones debris, foam and seaweed accumulates, while at the [[divergence]] zones plankton are caught and carried to the surface. If there are many plankton in the divergence zone fish are often attracted to feed on them.