How do tiny fish and coral larvae drift across the ocean before settling?

Many marine animals, including fish and corals, begin life as tiny drifting larvae. During this planktonic stage, they are carried by currents, tides, and turbulence across large areas of the ocean. This dispersal can connect populations far apart and helps species colonize new reefs or coastal habitats. Once the larvae develop enough, they settle onto the seabed or another suitable surface and metamorphose into juveniles or adults. Ocean currents therefore shape not only the movement of water but also the distribution of marine life.