Tideline


A tideline refers to where two currents in the ocean converge. Driftwood, floating seaweed, foam, and other floating debris may accumulate, forming sinuous lines called tidelines.
There are four mechanisms that can cause tidelines to form:
  1. Where one body of water is sinking beneath or riding over top of the surface layer of another body of water. These types of tidelines are often found where rivers enter the ocean.
  2. Along the margins of back-eddies.
  3. Convergence zones associated with internal gravity waves.
  4. Along adjacent cells formed by wind currents.